diff --git a/libs/base/geo_object_id.cpp b/libs/base/geo_object_id.cpp
index 51227d0f2..65a4fd9ef 100644
--- a/libs/base/geo_object_id.cpp
+++ b/libs/base/geo_object_id.cpp
@@ -10,9 +10,9 @@ namespace
 //          and add assertions about the highest bit.
 //          The old scheme used the highest bit and the new one does not.
 // uint64_t const kTypeMask = 0x7F00000000000000;
-uint64_t const kTypeMask = 0xFF00000000000000;
-uint64_t const kReservedMask = 0x00FF000000000000;
-uint64_t const kSerialMask = 0x0000FFFFFFFFFFFF;
+uint64_t constexpr kTypeMask = 0xFF00000000000000;
+uint64_t constexpr kReservedMask = 0x00FF000000000000;
+uint64_t constexpr kSerialMask = 0x0000FFFFFFFFFFFF;
 }  // namespace
 
 namespace base
diff --git a/libs/base/suffix_array.cpp b/libs/base/suffix_array.cpp
index 1e7b9507f..a62a47f66 100644
--- a/libs/base/suffix_array.cpp
+++ b/libs/base/suffix_array.cpp
@@ -96,7 +96,7 @@ Slice<Container> MakeSlice(Container const & c, size_t offset)
 template <typename S>
 void RawSkew(size_t n, size_t maxValue, S const & s, size_t * sa)
 {
-  size_t const kInvalidId = std::numeric_limits<size_t>::max();
+  size_t constexpr kInvalidId = std::numeric_limits<size_t>::max();
 
   if (n == 0)
     return;
diff --git a/libs/coding/bwt.cpp b/libs/coding/bwt.cpp
index aaa82e9e4..15a70daa1 100644
--- a/libs/coding/bwt.cpp
+++ b/libs/coding/bwt.cpp
@@ -10,11 +10,11 @@
 
 namespace
 {
-size_t const kNumBytes = 256;
+size_t constexpr kNumBytes = 256;
 
 // Fake trailing '$' for the BWT, used for original string
 // reconstruction.
-uint32_t const kEOS = 256;
+uint32_t constexpr kEOS = 256;
 
 // FirstColumn represents the first column in the BWT matrix. As
 // during reverse BWT we need to reconstruct canonical first column,
diff --git a/libs/coding/compressed_bit_vector.cpp b/libs/coding/compressed_bit_vector.cpp
index 728ac397d..0c8d7c8af 100644
--- a/libs/coding/compressed_bit_vector.cpp
+++ b/libs/coding/compressed_bit_vector.cpp
@@ -414,7 +414,7 @@ unique_ptr<CompressedBitVector> CompressedBitVectorBuilder::FromBitPositions(vec
 // static
 unique_ptr<CompressedBitVector> CompressedBitVectorBuilder::FromBitGroups(vector<uint64_t> && bitGroups)
 {
-  static uint64_t const kBlockSize = DenseCBV::kBlockSize;
+  static uint64_t constexpr kBlockSize = DenseCBV::kBlockSize;
 
   while (!bitGroups.empty() && bitGroups.back() == 0)
     bitGroups.pop_back();
diff --git a/libs/coding/compressed_bit_vector.hpp b/libs/coding/compressed_bit_vector.hpp
index 48f2d9477..6cfe3aa6a 100644
--- a/libs/coding/compressed_bit_vector.hpp
+++ b/libs/coding/compressed_bit_vector.hpp
@@ -89,7 +89,7 @@ class DenseCBV : public CompressedBitVector
 {
 public:
   friend class CompressedBitVectorBuilder;
-  static uint64_t const kBlockSize = 64;
+  static uint64_t constexpr kBlockSize = 64;
 
   DenseCBV() = default;
 
diff --git a/libs/coding/files_container.hpp b/libs/coding/files_container.hpp
index 04e604ef7..98f1db234 100644
--- a/libs/coding/files_container.hpp
+++ b/libs/coding/files_container.hpp
@@ -34,7 +34,7 @@ public:
   /// this value.
   ///
   /// WARNING! Existing sections may not be properly aligned.
-  static uint64_t const kSectionAlignment = 8;
+  static uint64_t constexpr kSectionAlignment = 8;
 
   bool IsExist(Tag const & tag) const { return GetInfo(tag) != 0; }
 
diff --git a/libs/coding/hex.cpp b/libs/coding/hex.cpp
index fefd7b095..1d5555937 100644
--- a/libs/coding/hex.cpp
+++ b/libs/coding/hex.cpp
@@ -4,7 +4,7 @@
 
 namespace impl
 {
-static char const kToHexTable[] = "0123456789ABCDEF";
+static char constexpr kToHexTable[] = "0123456789ABCDEF";
 
 void ToHexRaw(void const * src, size_t size, void * dst)
 {
diff --git a/libs/coding/huffman.cpp b/libs/coding/huffman.cpp
index c5f3c6e27..1ce43e56b 100644
--- a/libs/coding/huffman.cpp
+++ b/libs/coding/huffman.cpp
@@ -100,7 +100,7 @@ void HuffmanCoder::SetDepths(Node * root, uint32_t depth)
   // One would need more than 2^32 symbols to build a code that long.
   // On the other hand, 32 is short enough for our purposes, so do not
   // try to shrink the trees beyond this threshold.
-  uint32_t const kMaxDepth = 32;
+  uint32_t constexpr kMaxDepth = 32;
 
   if (!root)
     return;
diff --git a/libs/coding/parse_xml.hpp b/libs/coding/parse_xml.hpp
index d89e6d9f0..cf2ceff6b 100644
--- a/libs/coding/parse_xml.hpp
+++ b/libs/coding/parse_xml.hpp
@@ -39,7 +39,7 @@ public:
   }
 
 private:
-  uint32_t static const kBufferSize = 16 * 1024;
+  uint32_t static constexpr kBufferSize = 16 * 1024;
 
   uint64_t m_res = 0;
   uint64_t m_numRead = 0;
diff --git a/libs/coding/text_storage.hpp b/libs/coding/text_storage.hpp
index c7b860b22..0f9dadf49 100644
--- a/libs/coding/text_storage.hpp
+++ b/libs/coding/text_storage.hpp
@@ -212,7 +212,7 @@ private:
 class BlockedTextStorageReader
 {
 public:
-  inline static size_t const kDefaultCacheSize = 32;
+  inline static size_t constexpr kDefaultCacheSize = 32;
 
   BlockedTextStorageReader() : m_cache(kDefaultCacheSize) {}
   explicit BlockedTextStorageReader(size_t cacheSize) : m_cache(cacheSize) {}
diff --git a/libs/drape/overlay_tree.cpp b/libs/drape/overlay_tree.cpp
index 5716cecc3..36700f3bc 100644
--- a/libs/drape/overlay_tree.cpp
+++ b/libs/drape/overlay_tree.cpp
@@ -7,14 +7,14 @@
 
 namespace dp
 {
-int const kMinFrameUpdatePeriod = 5;
-int const kAvgFrameUpdatePeriod = 10;
-int const kMaxFrameUpdatePeriod = 15;
-uint32_t const kMinHandlesCount = 100;
-uint32_t const kMaxHandlesCount = 1000;
+int constexpr kMinFrameUpdatePeriod = 5;
+int constexpr kAvgFrameUpdatePeriod = 10;
+int constexpr kMaxFrameUpdatePeriod = 15;
+uint32_t constexpr kMinHandlesCount = 100;
+uint32_t constexpr kMaxHandlesCount = 1000;
 
-size_t const kAverageHandlesCount[dp::OverlayRanksCount] = {300, 200, 50};
-int const kInvalidFrame = -1;
+size_t constexpr kAverageHandlesCount[dp::OverlayRanksCount] = {300, 200, 50};
+int constexpr kInvalidFrame = -1;
 
 namespace
 {
@@ -466,7 +466,7 @@ void OverlayTree::Select(m2::PointD const & glbPoint, TOverlayContainer & result
   ScreenBase const & screen = GetModelView();
   m2::PointD const pxPoint = screen.GtoP(glbPoint);
 
-  double const kSearchRectHalfSize = 10.0;
+  double constexpr kSearchRectHalfSize = 10.0;
   m2::RectD rect(pxPoint, pxPoint);
   rect.Inflate(kSearchRectHalfSize, kSearchRectHalfSize);
 
diff --git a/libs/drape/texture_of_colors.cpp b/libs/drape/texture_of_colors.cpp
index f1d75cb12..7ce5635a2 100644
--- a/libs/drape/texture_of_colors.cpp
+++ b/libs/drape/texture_of_colors.cpp
@@ -10,8 +10,8 @@ namespace dp
 
 namespace
 {
-int const kResourceSize = 2;
-int const kBytesPerPixel = 4;
+int constexpr kResourceSize = 2;
+int constexpr kBytesPerPixel = 4;
 }  // namespace
 
 ColorPalette::ColorPalette(m2::PointU const & canvasSize) : m_textureSize(canvasSize), m_cursor(m2::PointU::Zero()) {}
diff --git a/libs/drape/vulkan/vulkan_memory_manager.cpp b/libs/drape/vulkan/vulkan_memory_manager.cpp
index fdeae1fc3..a3db34f1f 100644
--- a/libs/drape/vulkan/vulkan_memory_manager.cpp
+++ b/libs/drape/vulkan/vulkan_memory_manager.cpp
@@ -13,14 +13,14 @@ namespace vulkan
 {
 namespace
 {
-std::array<uint32_t, VulkanMemoryManager::kResourcesCount> const kMinBlockSizeInBytes = {{
+std::array<uint32_t, VulkanMemoryManager::kResourcesCount> constexpr kMinBlockSizeInBytes = {{
     1024 * 1024,  // Geometry
     128 * 1024,   // Uniform
     0,            // Staging (no minimal size)
     0,            // Image (no minimal size)
 }};
 
-std::array<uint32_t, VulkanMemoryManager::kResourcesCount> const kDesiredSizeInBytes = {{
+std::array<uint32_t, VulkanMemoryManager::kResourcesCount> constexpr kDesiredSizeInBytes = {{
     80 * 1024 * 1024,                      // Geometry
     std::numeric_limits<uint32_t>::max(),  // Uniform (unlimited)
     20 * 1024 * 1024,                      // Staging
diff --git a/libs/drape_frontend/animation_constants.hpp b/libs/drape_frontend/animation_constants.hpp
index ced06a4b0..24e2c8dbe 100644
--- a/libs/drape_frontend/animation_constants.hpp
+++ b/libs/drape_frontend/animation_constants.hpp
@@ -2,6 +2,6 @@
 
 namespace df
 {
-double const kMaxAnimationTimeSec = 1.5;  // in seconds
+double constexpr kMaxAnimationTimeSec = 1.5;  // in seconds
 
 }  // namespace df
diff --git a/libs/drape_frontend/apply_feature_functors.cpp b/libs/drape_frontend/apply_feature_functors.cpp
index 2f904f593..e2844af46 100644
--- a/libs/drape_frontend/apply_feature_functors.cpp
+++ b/libs/drape_frontend/apply_feature_functors.cpp
@@ -46,7 +46,7 @@ dp::Color ToDrapeColor(uint32_t src)
 
 namespace
 {
-double const kMinVisibleFontSize = 8.0;
+double constexpr kMinVisibleFontSize = 8.0;
 
 df::ColorConstant const kPoiDeletedMaskColor = "PoiDeletedMask";
 df::ColorConstant const kRoadShieldBlackTextColor = "RoadShieldBlackText";
@@ -58,8 +58,8 @@ df::ColorConstant const kRoadShieldRedBackgroundColor = "RoadShieldRedBackground
 df::ColorConstant const kRoadShieldOrangeBackgroundColor = "RoadShieldOrangeBackground";
 df::ColorConstant const kRoadShieldUKYellowTextColor = "RoadShieldUKYellowText";
 
-uint32_t const kPathTextBaseTextIndex = 128;
-uint32_t const kShieldBaseTextIndex = 0;
+uint32_t constexpr kPathTextBaseTextIndex = 128;
+uint32_t constexpr kShieldBaseTextIndex = 0;
 
 #ifdef LINES_GENERATION_CALC_FILTERED_POINTS
 class LinesStat
diff --git a/libs/drape_frontend/arrow3d.cpp b/libs/drape_frontend/arrow3d.cpp
index 3ef62775c..449733454 100644
--- a/libs/drape_frontend/arrow3d.cpp
+++ b/libs/drape_frontend/arrow3d.cpp
@@ -50,7 +50,7 @@ df::ColorConstant const kArrow3DOutlineColor = "Arrow3DOutline";
 std::string const kDefaultArrowMesh = "arrow.obj";
 std::string const kDefaultArrowShadowMesh = "arrow_shadow.obj";
 
-std::string_view const kMainFileId = "main_obj_file_id";
+std::string_view constexpr kMainFileId = "main_obj_file_id";
 
 using TLoadingCompletion =
     std::function<void(std::vector<float> positions, std::vector<float> normals, std::vector<float> texCoords)>;
@@ -351,7 +351,7 @@ bool Arrow3d::IsValid() const
 // static
 double Arrow3d::GetMaxBottomSize()
 {
-  double const kBottomSize = 1.0;
+  double constexpr kBottomSize = 1.0;
   return kBottomSize * arrow3d::kArrowSize * arrow3d::kArrow3dScaleMax * kOutlineScale;
 }
 
diff --git a/libs/drape_frontend/circles_pack_shape.cpp b/libs/drape_frontend/circles_pack_shape.cpp
index eee3bd448..f86a5e97d 100644
--- a/libs/drape_frontend/circles_pack_shape.cpp
+++ b/libs/drape_frontend/circles_pack_shape.cpp
@@ -16,7 +16,7 @@ namespace df
 {
 namespace
 {
-uint32_t const kDynamicStreamID = 0x7F;
+uint32_t constexpr kDynamicStreamID = 0x7F;
 
 struct CirclesPackStaticVertex
 {
diff --git a/libs/drape_frontend/colored_symbol_shape.cpp b/libs/drape_frontend/colored_symbol_shape.cpp
index 779c00275..e4732170e 100644
--- a/libs/drape_frontend/colored_symbol_shape.cpp
+++ b/libs/drape_frontend/colored_symbol_shape.cpp
@@ -118,7 +118,7 @@ void ColoredSymbolShape::Draw(ref_ptr<dp::GraphicsContext> context, ref_ptr<dp::
     pixelSize = m2::PointU(2 * static_cast<uint32_t>(m_params.m_radiusInPixels),
                            2 * static_cast<uint32_t>(m_params.m_radiusInPixels));
     // Here we use an equilateral triangle to render circle (incircle of a triangle).
-    static float const kSqrt3 = static_cast<float>(sqrt(3.0f));
+    static float constexpr kSqrt3 = static_cast<float>(sqrt(3.0f));
     float r = m_params.m_radiusInPixels - m_params.m_outlineWidth;
 
     V::TTexCoord uv2(uv.x, uv.y, norm(0.0, 0.0));
@@ -195,7 +195,7 @@ void ColoredSymbolShape::Draw(ref_ptr<dp::GraphicsContext> context, ref_ptr<dp::
     }
 
     // Here we use an right triangle to render a quarter of circle.
-    static float const kSqrt2 = static_cast<float>(sqrt(2.0f));
+    static float constexpr kSqrt2 = static_cast<float>(sqrt(2.0f));
     float r = m_params.m_radiusInPixels - m_params.m_outlineWidth;
     V::TTexCoord uv2(uv.x, uv.y, norm(-halfWidthBody, halfHeightBody));
     buffer.push_back(V(position, V::TNormal(0.0, 0.0, r, 0.0f), uv2));
diff --git a/libs/drape_frontend/frontend_renderer.cpp b/libs/drape_frontend/frontend_renderer.cpp
index 641bf0a8f..d31c0db61 100644
--- a/libs/drape_frontend/frontend_renderer.cpp
+++ b/libs/drape_frontend/frontend_renderer.cpp
@@ -1519,7 +1519,7 @@ void FrontendRenderer::Render3dLayer(ScreenBase const & modelView)
   DEBUG_LABEL(m_context, "3D Layer");
   if (m_buildingsFramebuffer->IsSupported())
   {
-    float const kOpacity = 0.7f;
+    float constexpr kOpacity = 0.7f;
     m_screenQuadRenderer->RenderTexture(m_context, make_ref(m_gpuProgramManager), m_buildingsFramebuffer->GetTexture(),
                                         kOpacity);
   }
@@ -2501,7 +2501,7 @@ void FrontendRenderer::UpdateScene(ScreenBase const & modelView)
 
   auto removePredicate = [this](drape_ptr<RenderGroup> const & group)
   {
-    uint32_t const kMaxGenerationRange = 5;
+    uint32_t constexpr kMaxGenerationRange = 5;
     TileKey const & key = group->GetTileKey();
 
     return (GetDepthLayer(group->GetState()) == DepthLayer::OverlayLayer && key.m_zoomLevel > GetCurrentZoom()) ||
diff --git a/libs/drape_frontend/gps_track_renderer.cpp b/libs/drape_frontend/gps_track_renderer.cpp
index e51889d67..e1b1e8b50 100644
--- a/libs/drape_frontend/gps_track_renderer.cpp
+++ b/libs/drape_frontend/gps_track_renderer.cpp
@@ -22,26 +22,26 @@ df::ColorConstant const kTrackCarSpeedColor = "TrackCarSpeed";
 df::ColorConstant const kTrackPlaneSpeedColor = "TrackPlaneSpeed";
 df::ColorConstant const kTrackHumanSpeedColor = "TrackHumanSpeed";
 
-int const kMinVisibleZoomLevel = 5;
+int constexpr kMinVisibleZoomLevel = 5;
 
-uint32_t const kAveragePointsCount = 512;
+uint32_t constexpr kAveragePointsCount = 512;
 
 // Radius of circles depending on zoom levels.
-std::array<float, 20> const kRadiusInPixel = {
+std::array<float, 20> constexpr kRadiusInPixel = {
     // 1   2     3     4     5     6     7     8     9     10
     0.8f, 0.8f, 1.5f, 2.5f, 2.5f, 2.5f, 2.5f, 2.5f, 2.5f, 2.5f,
     // 11   12    13    14    15    16    17    18    19     20
     2.5f, 2.5f, 2.5f, 2.5f, 3.0f, 4.0f, 4.5f, 4.5f, 5.0f, 5.5f};
 
-double const kHumanSpeed = 2.6;  // meters per second
-double const kCarSpeed = 6.2;    // meters per second
-uint8_t const kMinDayAlpha = 90;
-uint8_t const kMaxDayAlpha = 144;
-uint8_t const kMinNightAlpha = 50;
-uint8_t const kMaxNightAlpha = 102;
-double const kUnknownDistanceTime = 5 * 60;  // seconds
+double constexpr kHumanSpeed = 2.6;  // meters per second
+double constexpr kCarSpeed = 6.2;    // meters per second
+uint8_t constexpr kMinDayAlpha = 90;
+uint8_t constexpr kMaxDayAlpha = 144;
+uint8_t constexpr kMinNightAlpha = 50;
+uint8_t constexpr kMaxNightAlpha = 102;
+double constexpr kUnknownDistanceTime = 5 * 60;  // seconds
 
-double const kDistanceScalar = 0.4;
+double constexpr kDistanceScalar = 0.4;
 
 #ifdef DEBUG
 bool GpsPointsSortPredicate(GpsTrackPoint const & pt1, GpsTrackPoint const & pt2)
diff --git a/libs/drape_frontend/gui/compass.cpp b/libs/drape_frontend/gui/compass.cpp
index 7e14afe3d..8038a2e1b 100644
--- a/libs/drape_frontend/gui/compass.cpp
+++ b/libs/drape_frontend/gui/compass.cpp
@@ -48,9 +48,9 @@ public:
 
   bool Update(ScreenBase const & screen) override
   {
-    static double const kVisibleTolerance = 0.1;
-    static double const kVisibleStartAngle = math::DegToRad(0.0 + kVisibleTolerance);
-    static double const kVisibleEndAngle = math::DegToRad(360.0 - kVisibleTolerance);
+    static double constexpr kVisibleTolerance = 0.1;
+    static double constexpr kVisibleStartAngle = math::DegToRad(0.0 + kVisibleTolerance);
+    static double constexpr kVisibleEndAngle = math::DegToRad(360.0 - kVisibleTolerance);
 
     auto const angle = static_cast<float>(ang::AngleIn2PI(screen.GetAngle()));
 
diff --git a/libs/drape_frontend/line_shape.cpp b/libs/drape_frontend/line_shape.cpp
index 5f370109d..b42c44480 100644
--- a/libs/drape_frontend/line_shape.cpp
+++ b/libs/drape_frontend/line_shape.cpp
@@ -198,7 +198,7 @@ private:
   void CreateRoundCap(glsl::vec2 const & pos)
   {
     // Here we use an equilateral triangle to render circle (incircle of a triangle).
-    static float const kSqrt3 = sqrt(3.0f);
+    static float constexpr kSqrt3 = sqrt(3.0f);
     float const radius = GetHalfWidth();
 
     m_capGeometry.emplace_back(CapVertex::TPosition(pos, m_params.m_depth),
diff --git a/libs/drape_frontend/line_shape_helper.cpp b/libs/drape_frontend/line_shape_helper.cpp
index 104228ac0..6b9680c06 100644
--- a/libs/drape_frontend/line_shape_helper.cpp
+++ b/libs/drape_frontend/line_shape_helper.cpp
@@ -14,7 +14,7 @@ void UpdateNormalBetweenSegments(LineSegment * segment1, LineSegment * segment2)
 
   float const dotProduct = glsl::dot(segment1->m_leftNormals[EndPoint], segment2->m_leftNormals[StartPoint]);
   float const absDotProduct = fabs(dotProduct);
-  float const kEps = 1e-5;
+  float constexpr kEps = 1e-5;
 
   if (fabs(absDotProduct - 1.0f) < kEps)
   {
@@ -22,7 +22,7 @@ void UpdateNormalBetweenSegments(LineSegment * segment1, LineSegment * segment2)
     return;
   }
 
-  float const kMaxScalar = 5;
+  float constexpr kMaxScalar = 5;
   float const crossProduct = glsl::cross(glsl::vec3(segment1->m_tangent, 0), glsl::vec3(segment2->m_tangent, 0)).z;
   if (crossProduct < 0)
   {
diff --git a/libs/drape_frontend/my_position.cpp b/libs/drape_frontend/my_position.cpp
index b31a39eb3..bcc9e3cc8 100644
--- a/libs/drape_frontend/my_position.cpp
+++ b/libs/drape_frontend/my_position.cpp
@@ -211,7 +211,7 @@ void MyPosition::CacheSymbol(ref_ptr<dp::GraphicsContext> context, dp::TextureMa
 
 void MyPosition::CachePointPosition(ref_ptr<dp::GraphicsContext> context, ref_ptr<dp::TextureManager> mng)
 {
-  int const kSymbolsCount = 1;
+  int constexpr kSymbolsCount = 1;
   dp::TextureManager::SymbolRegion pointSymbol;
   mng->GetSymbolRegion("current-position", pointSymbol);
 
diff --git a/libs/drape_frontend/my_position_controller.cpp b/libs/drape_frontend/my_position_controller.cpp
index 72a4683c2..ec02f6d60 100644
--- a/libs/drape_frontend/my_position_controller.cpp
+++ b/libs/drape_frontend/my_position_controller.cpp
@@ -23,19 +23,19 @@ namespace df
 {
 namespace
 {
-int const kPositionRoutingOffsetY = 104;
+int constexpr kPositionRoutingOffsetY = 104;
 // Speed threshold to switch to GPS bearing. Use compass for slow walking only.
-double const kMinSpeedThresholdMps = 0.7;  // 2.5 km/h
-double const kGpsBearingLifetimeSec = 5.0;
-double const kMaxTimeInBackgroundSec = 60.0 * 60 * 30;  // 30 hours before starting detecting position again
-double const kMaxNotFollowRoutingTimeSec = 20.0;
-double const kMaxUpdateLocationInvervalSec = 30.0;
-double const kMaxBlockAutoZoomTimeSec = 10.0;
+double constexpr kMinSpeedThresholdMps = 0.7;  // 2.5 km/h
+double constexpr kGpsBearingLifetimeSec = 5.0;
+double constexpr kMaxTimeInBackgroundSec = 60.0 * 60 * 30;  // 30 hours before starting detecting position again
+double constexpr kMaxNotFollowRoutingTimeSec = 20.0;
+double constexpr kMaxUpdateLocationInvervalSec = 30.0;
+double constexpr kMaxBlockAutoZoomTimeSec = 10.0;
 
-int const kZoomThreshold = 10;
-int const kMaxScaleZoomLevel = 16;
-int const kDefaultAutoZoom = 16;
-double const kUnknownAutoZoom = -1.0;
+int constexpr kZoomThreshold = 10;
+int constexpr kMaxScaleZoomLevel = 16;
+int constexpr kDefaultAutoZoom = 16;
+double constexpr kUnknownAutoZoom = -1.0;
 
 inline int GetZoomLevel(ScreenBase const & screen)
 {
@@ -231,7 +231,7 @@ void MyPositionController::DragStarted()
 
 void MyPositionController::DragEnded(m2::PointD const & distance)
 {
-  float const kBindingDistance = 0.1f;
+  float constexpr kBindingDistance = 0.1f;
   m_needBlockAnimation = false;
   if (distance.Length() > kBindingDistance * std::min(m_pixelRect.SizeX(), m_pixelRect.SizeY()))
     StopLocationFollow();
diff --git a/libs/drape_frontend/navigator.cpp b/libs/drape_frontend/navigator.cpp
index 87a0f327c..fc4f5e5f7 100644
--- a/libs/drape_frontend/navigator.cpp
+++ b/libs/drape_frontend/navigator.cpp
@@ -15,7 +15,7 @@
 
 namespace df
 {
-double const kDefault3dScale = 1.0;
+double constexpr kDefault3dScale = 1.0;
 
 void Navigator::SetFromScreen(ScreenBase const & screen)
 {
@@ -29,7 +29,7 @@ void Navigator::SetFromScreen(ScreenBase const & screen, uint32_t tileSize, doub
 
   if (!CheckMaxScale(tmp, tileSize, visualScale))
   {
-    int const scale = scales::GetUpperStyleScale() - 1;
+    int constexpr scale = scales::GetUpperStyleScale() - 1;
     m2::RectD newRect = df::GetRectForDrawScale(scale, screen.GetOrg());
     newRect.Scale(m_Screen.GetScale3d());
     CheckMinMaxVisibleScale(newRect, scale, m_Screen.GetScale3d());
diff --git a/libs/drape_frontend/overlay_batcher.cpp b/libs/drape_frontend/overlay_batcher.cpp
index eaf5a4791..9b5eabc90 100644
--- a/libs/drape_frontend/overlay_batcher.cpp
+++ b/libs/drape_frontend/overlay_batcher.cpp
@@ -8,12 +8,12 @@
 
 namespace df
 {
-uint32_t const kOverlayIndexBufferSize = 30000;
-uint32_t const kOverlayVertexBufferSize = 20000;
+uint32_t constexpr kOverlayIndexBufferSize = 30000;
+uint32_t constexpr kOverlayVertexBufferSize = 20000;
 
 OverlayBatcher::OverlayBatcher(TileKey const & key) : m_batcher(kOverlayIndexBufferSize, kOverlayVertexBufferSize)
 {
-  int const kAverageRenderDataCount = 5;
+  int constexpr kAverageRenderDataCount = 5;
   m_data.reserve(kAverageRenderDataCount);
 
   m_batcher.SetBatcherHash(key.GetHashValue(BatcherBucket::Overlay));
diff --git a/libs/drape_frontend/path_text_handle.cpp b/libs/drape_frontend/path_text_handle.cpp
index d8a7e5e2d..3c556c281 100644
--- a/libs/drape_frontend/path_text_handle.cpp
+++ b/libs/drape_frontend/path_text_handle.cpp
@@ -10,11 +10,11 @@ namespace df
 
 namespace
 {
-double const kValidPathSplineTurn = 15 * math::pi / 180;
-double const kCosTurn = cos(kValidPathSplineTurn);
-double const kSinTurn = sin(kValidPathSplineTurn);
-double const kRoundStep = 23;
-int const kMaxStepsCount = 7;
+double constexpr kValidPathSplineTurn = 15 * math::pi / 180;
+double constexpr kCosTurn = cos(kValidPathSplineTurn);
+double constexpr kSinTurn = sin(kValidPathSplineTurn);
+double constexpr kRoundStep = 23;
+int constexpr kMaxStepsCount = 7;
 
 bool RoundCorner(m2::PointD const & p1, m2::PointD const & p2, m2::PointD const & p3, int leftStepsCount,
                  std::vector<m2::PointD> & roundedCorner)
@@ -31,7 +31,7 @@ bool RoundCorner(m2::PointD const & p1, m2::PointD const & p2, m2::PointD const
     return false;
 
   double const vs = df::VisualParams::Instance().GetVisualScale();
-  double const kMinCornerDist = 1.0;
+  double constexpr kMinCornerDist = 1.0;
   if ((p3 - p1).SquaredLength() < kMinCornerDist * vs)
   {
     roundedCorner.push_back(p1);
@@ -72,7 +72,7 @@ void ReplaceLastCorner(std::vector<m2::PointD> const & roundedCorner, m2::Spline
 bool IsValidSplineTurn(m2::PointD const & normalizedDir1, m2::PointD const & normalizedDir2)
 {
   double const dotProduct = m2::DotProduct(normalizedDir1, normalizedDir2);
-  double const kEps = 1e-5;
+  double constexpr kEps = 1e-5;
   return dotProduct > kCosTurn || fabs(dotProduct - kCosTurn) < kEps;
 }
 
diff --git a/libs/drape_frontend/route_renderer.cpp b/libs/drape_frontend/route_renderer.cpp
index 978a8d4e4..bb70b9e14 100644
--- a/libs/drape_frontend/route_renderer.cpp
+++ b/libs/drape_frontend/route_renderer.cpp
@@ -32,18 +32,18 @@ std::string const kRouteFakeOutlineColor = "RouteFakeOutline";
 
 namespace
 {
-std::array<float, 20> const kPreviewPointRadiusInPixel = {
+std::array<float, 20> constexpr kPreviewPointRadiusInPixel = {
     // 1   2     3     4     5     6     7     8     9     10
     0.8f, 0.8f, 2.0f, 2.5f, 2.5f, 2.5f, 2.5f, 2.5f, 2.5f, 2.5f,
     // 11   12    13    14    15    16    17    18    19     20
     2.5f, 2.5f, 2.5f, 2.5f, 3.0f, 4.0f, 4.5f, 4.5f, 5.0f, 5.5f};
 
-int const kArrowAppearingZoomLevel = 14;
-int const kInvalidGroup = -1;
+int constexpr kArrowAppearingZoomLevel = 14;
+int constexpr kInvalidGroup = -1;
 
-uint32_t const kPreviewPointsCount = 512;
+uint32_t constexpr kPreviewPointsCount = 512;
 
-double const kInvalidDistance = -1.0;
+double constexpr kInvalidDistance = -1.0;
 
 void InterpolateByZoom(SubrouteConstPtr const & subroute, ScreenBase const & screen, float & halfWidth, double & zoom)
 {
@@ -111,7 +111,7 @@ bool AreEqualArrowBorders(std::vector<ArrowBorders> const & borders1, std::vecto
     if (borders1[i].m_groupIndex != borders2[i].m_groupIndex)
       return false;
 
-  double const kDistanceEps = 1e-5;
+  double constexpr kDistanceEps = 1e-5;
   for (size_t i = 0; i < borders1.size(); i++)
   {
     if (fabs(borders1[i].m_startDistance - borders2[i].m_startDistance) > kDistanceEps)
diff --git a/libs/drape_frontend/route_shape.cpp b/libs/drape_frontend/route_shape.cpp
index 92aeeca0d..bcd31ad15 100644
--- a/libs/drape_frontend/route_shape.cpp
+++ b/libs/drape_frontend/route_shape.cpp
@@ -21,34 +21,17 @@
 
 namespace df
 {
-std::array<float, 20> const kRouteHalfWidthInPixelCar = {
-    // 1   2     3     4     5     6     7     8     9     10
-    1.0f, 1.2f, 1.5f, 1.5f, 1.7f, 2.0f, 2.0f, 2.3f, 2.5f, 2.7f,
-    // 11   12    13    14    15   16    17    18    19     20
-    3.0f, 3.5f, 4.5f, 5.5f, 7.0, 9.0f, 10.0f, 14.0f, 22.0f, 27.0f};
-
-std::array<float, 20> const kRouteHalfWidthInPixelTransit = {
-    // 1   2     3     4     5     6     7     8     9     10
-    1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.1f, 1.2f, 1.3f, 1.4f, 1.7f,
-    // 11   12    13    14    15   16    17    18    19     20
-    1.8f, 2.1f, 2.5f, 2.8f, 3.5, 4.5f, 5.0f, 7.0f, 11.0f, 13.0f};
-
-std::array<float, 20> const kRouteHalfWidthInPixelOthers = {
-    // 1   2     3     4     5     6     7     8     9     10
-    1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.1f, 1.2f, 1.3f,
-    // 11   12    13    14    15   16    17    18    19     20
-    1.5f, 1.7f, 2.3f, 2.7f, 3.5, 4.5f, 5.0f, 7.0f, 11.0f, 13.0f};
 
 namespace rs
 {
-float const kLeftSide = 1.0f;
-float const kCenter = 0.0f;
-float const kRightSide = -1.0f;
+float constexpr kLeftSide = 1.0f;
+float constexpr kCenter = 0.0f;
+float constexpr kRightSide = -1.0f;
 
-float const kRouteDepth = 99.0f;
-float const kMarkersDepth = 100.0f;
-float const kArrowsDepth = 200.0f;
-float const kDepthPerSubroute = 200.0f;
+float constexpr kRouteDepth = 99.0f;
+float constexpr kMarkersDepth = 100.0f;
+float constexpr kArrowsDepth = 200.0f;
+float constexpr kDepthPerSubroute = 200.0f;
 
 void GetArrowTextureRegion(ref_ptr<dp::TextureManager> textures, dp::TextureManager::SymbolRegion & region)
 {
@@ -106,7 +89,7 @@ void CalculatePoints(m2::PolylineD const & polyline, double start, double end, s
 
 float SideByNormal(glsl::vec2 const & normal, bool isLeft)
 {
-  float const kEps = 1e-5;
+  float constexpr kEps = 1e-5;
   float const side = isLeft ? kLeftSide : kRightSide;
   return glsl::length(normal) < kEps ? kCenter : side;
 }
@@ -399,10 +382,10 @@ void RouteShape::PrepareMarkersGeometry(std::vector<SubrouteMarker> const & mark
 {
   ASSERT(!markers.empty(), ());
 
-  static float const kSqrt3 = sqrt(3.0f);
-  static float const kSqrt2 = sqrt(2.0f);
-  static float const kInnerRadius = 0.6f;
-  static float const kOuterRadius = 1.0f;
+  static float constexpr kSqrt3 = sqrt(3.0f);
+  static float constexpr kSqrt2 = sqrt(2.0f);
+  static float constexpr kInnerRadius = 0.6f;
+  static float constexpr kOuterRadius = 1.0f;
 
   float const depth = baseDepth - 0.5f;
   float const innerDepth = baseDepth + 0.5f;
@@ -589,7 +572,7 @@ drape_ptr<df::SubrouteMarkersData> RouteShape::CacheMarkers(ref_ptr<dp::Graphics
 
   // Batching.
   {
-    uint32_t const kBatchSize = 200;
+    uint32_t constexpr kBatchSize = 200;
     dp::Batcher batcher(kBatchSize, kBatchSize);
     batcher.SetBatcherHash(static_cast<uint64_t>(BatcherBucket::Routing));
     dp::SessionGuard guard(context, batcher,
diff --git a/libs/drape_frontend/route_shape.hpp b/libs/drape_frontend/route_shape.hpp
index 3db05fa3a..e1ec8c774 100644
--- a/libs/drape_frontend/route_shape.hpp
+++ b/libs/drape_frontend/route_shape.hpp
@@ -20,25 +20,39 @@
 
 namespace df
 {
-double const kArrowSize = 0.0008;
+double constexpr kArrowSize = 0.0008;
 
 // Constants below depend on arrow texture.
-double const kArrowTextureWidth = 74.0;
-double const kArrowTextureHeight = 44.0;
-double const kArrowBodyHeight = 24.0;
-double const kArrowHeadTextureWidth = 32.0;
-double const kArrowTailTextureWidth = 4.0;
+double constexpr kArrowTextureWidth = 74.0;
+double constexpr kArrowTextureHeight = 44.0;
+double constexpr kArrowBodyHeight = 24.0;
+double constexpr kArrowHeadTextureWidth = 32.0;
+double constexpr kArrowTailTextureWidth = 4.0;
 
-double const kArrowHeadSize = kArrowHeadTextureWidth / kArrowTextureWidth;
-float const kArrowHeadFactor = static_cast<float>(2.0 * kArrowHeadTextureWidth / kArrowTextureHeight);
-double const kArrowTailSize = kArrowTailTextureWidth / kArrowTextureWidth;
-float const kArrowTailFactor = static_cast<float>(2.0 * kArrowTailTextureWidth / kArrowTextureHeight);
-double const kArrowHeightFactor = kArrowTextureHeight / kArrowBodyHeight;
-double const kArrowAspect = kArrowTextureWidth / kArrowTextureHeight;
+double constexpr kArrowHeadSize = kArrowHeadTextureWidth / kArrowTextureWidth;
+float constexpr kArrowHeadFactor = static_cast<float>(2.0 * kArrowHeadTextureWidth / kArrowTextureHeight);
+double constexpr kArrowTailSize = kArrowTailTextureWidth / kArrowTextureWidth;
+float constexpr kArrowTailFactor = static_cast<float>(2.0 * kArrowTailTextureWidth / kArrowTextureHeight);
+double constexpr kArrowHeightFactor = kArrowTextureHeight / kArrowBodyHeight;
+double constexpr kArrowAspect = kArrowTextureWidth / kArrowTextureHeight;
 
-extern std::array<float, 20> const kRouteHalfWidthInPixelCar;
-extern std::array<float, 20> const kRouteHalfWidthInPixelTransit;
-extern std::array<float, 20> const kRouteHalfWidthInPixelOthers;
+std::array<float, 20> constexpr kRouteHalfWidthInPixelCar = {
+    // 1   2     3     4     5     6     7     8     9     10
+    1.0f, 1.2f, 1.5f, 1.5f, 1.7f, 2.0f, 2.0f, 2.3f, 2.5f, 2.7f,
+    // 11   12    13    14    15   16    17    18    19     20
+    3.0f, 3.5f, 4.5f, 5.5f, 7.0, 9.0f, 10.0f, 14.0f, 22.0f, 27.0f};
+
+std::array<float, 20> constexpr kRouteHalfWidthInPixelTransit = {
+    // 1   2     3     4     5     6     7     8     9     10
+    1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.1f, 1.2f, 1.3f, 1.4f, 1.7f,
+    // 11   12    13    14    15   16    17    18    19     20
+    1.8f, 2.1f, 2.5f, 2.8f, 3.5, 4.5f, 5.0f, 7.0f, 11.0f, 13.0f};
+
+std::array<float, 20> constexpr kRouteHalfWidthInPixelOthers = {
+    // 1   2     3     4     5     6     7     8     9     10
+    1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.1f, 1.2f, 1.3f,
+    // 11   12    13    14    15   16    17    18    19     20
+    1.5f, 1.7f, 2.3f, 2.7f, 3.5, 4.5f, 5.0f, 7.0f, 11.0f, 13.0f};
 
 enum class RouteType : uint8_t
 {
@@ -59,7 +73,7 @@ struct RoutePattern
 
   bool operator==(RoutePattern const & pattern) const
   {
-    double const kEps = 1e-5;
+    double constexpr kEps = 1e-5;
     return m_isDashed == pattern.m_isDashed && std::fabs(m_dashLength - pattern.m_dashLength) < kEps &&
            std::fabs(m_gapLength - pattern.m_gapLength) < kEps;
   }
diff --git a/libs/drape_frontend/rule_drawer.cpp b/libs/drape_frontend/rule_drawer.cpp
index 298053ffe..a59e4180c 100644
--- a/libs/drape_frontend/rule_drawer.cpp
+++ b/libs/drape_frontend/rule_drawer.cpp
@@ -38,7 +38,7 @@ namespace
 {
 // The first zoom level in kAverageSegmentsCount.
 int constexpr kFirstZoomInAverageSegments = 10;
-std::array<size_t, 10> const kAverageSegmentsCount = {
+std::array<size_t, 10> constexpr kAverageSegmentsCount = {
     // 10  11    12     13    14    15    16    17    18   19
     10000, 5000, 10000, 5000, 2500, 5000, 2000, 1000, 500, 500};
 
@@ -131,7 +131,7 @@ void ExtractTrafficGeometry(FeatureType const & f, df::RoadClass const & roadCla
       ASSERT_EQUAL(segment.size(), 2, ());
 
       // Skip zero-length segments.
-      double const kEps = 1e-5;
+      double constexpr kEps = 1e-5;
       if (segment[0].EqualDxDy(segment[1], kEps))
         break;
 
@@ -183,7 +183,7 @@ RuleDrawer::RuleDrawer(TCheckCancelledCallback const & checkCancelled, TIsCountr
   geometryConvertor.SetFromRect(m2::AnyRectD(r));
   m_trafficScalePtoG = geometryConvertor.GetScale();
 
-  int const kAverageOverlaysCount = 200;
+  int constexpr kAverageOverlaysCount = 200;
   m_mapShapes[df::OverlayType].reserve(kAverageOverlaysCount);
 }
 
diff --git a/libs/drape_frontend/selection_shape.cpp b/libs/drape_frontend/selection_shape.cpp
index 613e048f5..11a5e3428 100644
--- a/libs/drape_frontend/selection_shape.cpp
+++ b/libs/drape_frontend/selection_shape.cpp
@@ -17,7 +17,7 @@ namespace df
 {
 namespace
 {
-std::array<float, 20> const kHalfLineWidthInPixel = {
+std::array<float, 20> constexpr kHalfLineWidthInPixel = {
     // 1   2     3     4     5     6     7     8     9     10
     1.0f, 1.2f, 1.5f, 1.5f, 1.7f, 2.0f, 2.0f, 2.3f, 2.5f, 2.7f,
     // 11   12    13    14    15   16    17    18    19     20
diff --git a/libs/drape_frontend/selection_shape_generator.cpp b/libs/drape_frontend/selection_shape_generator.cpp
index 5ce142367..762046808 100644
--- a/libs/drape_frontend/selection_shape_generator.cpp
+++ b/libs/drape_frontend/selection_shape_generator.cpp
@@ -26,9 +26,9 @@ namespace
 {
 std::string const kTrackSelectedSymbolName = "track_marker_selected";
 df::ColorConstant const kSelectionColor = "Selection";
-float const kLeftSide = 1.0f;
-float const kCenter = 0.0f;
-float const kRightSide = -1.0f;
+float constexpr kLeftSide = 1.0f;
+float constexpr kCenter = 0.0f;
+float constexpr kRightSide = -1.0f;
 
 struct MarkerVertex
 {
@@ -91,7 +91,7 @@ dp::BindingInfo GetSelectionLineVertexBindingInfo()
 
 float SideByNormal(glsl::vec2 const & normal, bool isLeft)
 {
-  float const kEps = 1e-5;
+  float constexpr kEps = 1e-5;
   float const side = isLeft ? kLeftSide : kRightSide;
   return glsl::length(normal) < kEps ? kCenter : side;
 }
diff --git a/libs/drape_frontend/tile_info.cpp b/libs/drape_frontend/tile_info.cpp
index 3f20241e3..e15971d49 100644
--- a/libs/drape_frontend/tile_info.cpp
+++ b/libs/drape_frontend/tile_info.cpp
@@ -36,7 +36,7 @@ void TileInfo::ReadFeatureIndex(MapDataProvider const & model)
 
   ThrowIfCancelled();
 
-  size_t const kAverageFeaturesCount = 256;
+  size_t constexpr kAverageFeaturesCount = 256;
   m_featureInfo.reserve(kAverageFeaturesCount);
 
   MwmSet::MwmId lastMwm;
diff --git a/libs/drape_frontend/traffic_generator.cpp b/libs/drape_frontend/traffic_generator.cpp
index bed4d4393..b1a2bcf93 100644
--- a/libs/drape_frontend/traffic_generator.cpp
+++ b/libs/drape_frontend/traffic_generator.cpp
@@ -101,7 +101,7 @@ void SubmitCircleStaticVertices(RoadClass roadClass, glsl::vec3 const & pivot, g
                                 glsl::vec2 const & uv, std::vector<TrafficCircleStaticVertex> & circlesGeometry)
 {
   // Here we use an equilateral triangle to render circle (incircle of a triangle).
-  static float const kSqrt3 = sqrt(3.0f);
+  static float constexpr kSqrt3 = sqrt(3.0f);
   auto const p = glsl::vec4(pivot, static_cast<float>(roadClass));
   circlesGeometry.emplace_back(p, glsl::vec4(rightNormal, -kSqrt3, -1.0f), uv);
   circlesGeometry.emplace_back(p, glsl::vec4(rightNormal, kSqrt3, -1.0f), uv);
@@ -138,7 +138,7 @@ void TrafficGenerator::GenerateSegmentsGeometry(ref_ptr<dp::GraphicsContext> con
                                                 traffic::TrafficInfo::Coloring const & coloring,
                                                 ref_ptr<dp::TextureManager> texturesMgr)
 {
-  static std::array<int, 3> const kGenerateCirclesZoomLevel = {14, 14, 16};
+  static std::array<int, 3> constexpr kGenerateCirclesZoomLevel = {14, 14, 16};
 
   ASSERT(m_colorsCacheValid, ());
   auto const colorTexture = m_colorsCache[static_cast<size_t>(traffic::SpeedGroup::G0)].GetTexture();
@@ -161,7 +161,7 @@ void TrafficGenerator::GenerateSegmentsGeometry(ref_ptr<dp::GraphicsContext> con
     isLeftHand = (regionData.Get(feature::RegionData::RD_DRIVING) == "l");
   }
 
-  static std::array<float, 3> const kRoadClassDepths = {30.0f, 20.0f, 10.0f};
+  static std::array<float, 3> constexpr kRoadClassDepths = {30.0f, 20.0f, 10.0f};
 
   for (auto const & geomPair : geometry)
   {
diff --git a/libs/drape_frontend/traffic_renderer.cpp b/libs/drape_frontend/traffic_renderer.cpp
index 594c5d861..c48eb1ac8 100644
--- a/libs/drape_frontend/traffic_renderer.cpp
+++ b/libs/drape_frontend/traffic_renderer.cpp
@@ -31,41 +31,41 @@ int constexpr kMinVisibleArrowZoomLevel = 16;
 int constexpr kRoadClass2MinVisibleArrowZoomLevel = 17;
 int constexpr kOutlineMinZoomLevel = 14;
 
-float const kTrafficArrowAspect = 128.0f / 8.0f;
+float constexpr kTrafficArrowAspect = 128.0f / 8.0f;
 
-std::array<float, 20> const kLeftWidthInPixel = {
+std::array<float, 20> constexpr kLeftWidthInPixel = {
     // 1   2     3     4     5     6     7     8     9    10
     0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f,
     // 11   12    13   14    15    16    17   18     19    20
     0.5f, 0.5f, 0.5f, 0.6f, 1.6f, 2.7f, 3.5f, 4.0f, 4.0f, 4.0f};
 
-std::array<float, 20> const kRightWidthInPixel = {
+std::array<float, 20> constexpr kRightWidthInPixel = {
     // 1   2     3     4     5     6     7     8     9    10
     2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.5f, 3.0f, 3.0f,
     // 11  12    13    14    15    16    17    18    19     20
     3.0f, 3.5f, 4.0f, 3.9f, 3.2f, 2.7f, 3.5f, 4.0f, 4.0f, 4.0f};
 
-std::array<float, 20> const kRoadClass1WidthScalar = {
+std::array<float, 20> constexpr kRoadClass1WidthScalar = {
     // 1   2     3     4     5     6     7     8     9    10
     0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.3,
     // 11  12    13    14    15    16    17    18    19     20
     0.3, 0.35f, 0.45f, 0.55f, 0.6f, 0.8f, 1.0f, 1.0f, 1.0f, 1.0f};
 
-std::array<float, 20> const kRoadClass2WidthScalar = {
+std::array<float, 20> constexpr kRoadClass2WidthScalar = {
     // 1   2     3     4     5     6     7     8     9     10
     0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.3f,
     // 11  12    13    14    15     16   17    18    19    20
     0.3f, 0.3f, 0.3f, 0.4f, 0.5f, 0.5f, 0.65f, 0.85f, 0.95f, 1.0f};
 
-std::array<float, 20> const kTwoWayOffsetInPixel = {
+std::array<float, 20> constexpr kTwoWayOffsetInPixel = {
     // 1   2     3     4     5     6     7     8     9     10
     0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
     // 11  12    13    14    15     16   17    18    19    20
     0.0f, 0.5f, 0.5f, 0.75f, 1.7f, 2.5f, 2.5f, 2.5f, 2.5f, 2.5f};
 
-std::array<int, 3> const kLineDrawerRoadClass1 = {12, 13, 14};
+std::array<int, 3> constexpr kLineDrawerRoadClass1 = {12, 13, 14};
 
-std::array<int, 2> const kLineDrawerRoadClass2 = {15, 16};
+std::array<int, 2> constexpr kLineDrawerRoadClass2 = {15, 16};
 
 float CalculateHalfWidth(ScreenBase const & screen, RoadClass const & roadClass, bool left)
 {
@@ -206,7 +206,7 @@ void TrafficRenderer::RenderTraffic(ref_ptr<dp::GraphicsContext> context, ref_pt
       float const leftPixelHalfWidth = CalculateHalfWidth(screen, renderData.m_roadClass, true /* left */);
       float const invLeftPixelLength = 1.0f / (2.0f * leftPixelHalfWidth * kTrafficArrowAspect);
       float const rightPixelHalfWidth = CalculateHalfWidth(screen, renderData.m_roadClass, false /* left */);
-      float const kEps = 1e-5;
+      float constexpr kEps = 1e-5;
       if (fabs(leftPixelHalfWidth) < kEps && fabs(rightPixelHalfWidth) < kEps)
         continue;
 
@@ -249,7 +249,7 @@ float TrafficRenderer::GetTwoWayOffset(RoadClass const & roadClass, int zoomLeve
 {
   // There is no offset for class-0 roads, the offset for them is created by
   // kLeftWidthInPixel and kRightWidthInPixel.
-  int const kRoadClass0MinZoomLevel = 14;
+  int constexpr kRoadClass0MinZoomLevel = 14;
   if (roadClass == RoadClass::Class0 && zoomLevel <= kRoadClass0MinZoomLevel)
     return 0.0f;
 
diff --git a/libs/drape_frontend/transit_scheme_builder.cpp b/libs/drape_frontend/transit_scheme_builder.cpp
index 74813b473..bfec1b123 100644
--- a/libs/drape_frontend/transit_scheme_builder.cpp
+++ b/libs/drape_frontend/transit_scheme_builder.cpp
@@ -118,7 +118,7 @@ void GenerateLineCaps(ref_ptr<dp::GraphicsContext> context, std::vector<SchemeSe
   for (auto const & segment : segments)
   {
     // Here we use an equilateral triangle to render a circle (incircle of a triangle).
-    static float const kSqrt3 = sqrt(3.0f);
+    static float constexpr kSqrt3 = sqrt(3.0f);
     auto const offset = lineOffset * segment.m_rightNormal;
     auto const pivot = glsl::vec3(segment.m_p2, depth);
 
@@ -1081,7 +1081,7 @@ void TransitSchemeBuilder::GenerateLine(ref_ptr<dp::GraphicsContext> context, st
   auto const color =
       glsl::vec4(colorConst.GetRedF(), colorConst.GetGreenF(), colorConst.GetBlueF(), colorConst.GetAlphaF());
   size_t const kAverageSize = path.size() * 6;
-  size_t const kAverageCapSize = 12;
+  size_t constexpr kAverageCapSize = 12;
   geometry.reserve(kAverageSize + kAverageCapSize * 2);
 
   std::vector<SchemeSegment> segments;
@@ -1133,8 +1133,8 @@ void TransitSchemeBuilder::GenerateStop(ref_ptr<dp::GraphicsContext> context, St
     return;
   }
 
-  float const kInnerScale = 0.8f;
-  float const kOuterScale = 2.0f;
+  float constexpr kInnerScale = 0.8f;
+  float constexpr kOuterScale = 2.0f;
 
   auto const lineId = *stopParams.m_stopsInfo.begin()->second.m_lines.begin();
   auto const colorName = df::GetTransitColorName(lines.at(lineId).m_color);
@@ -1210,8 +1210,8 @@ void TransitSchemeBuilder::GenerateStop(ref_ptr<dp::GraphicsContext> context, St
     return;
   }
 
-  float const kInnerScale = 0.8f;
-  float const kOuterScale = 2.0f;
+  float constexpr kInnerScale = 0.8f;
+  float constexpr kOuterScale = 2.0f;
 
   ::transit::TransitId lineId = *stopParams.m_stopsInfo.begin()->second.m_lines.begin();
 
@@ -1397,8 +1397,8 @@ void TransitSchemeBuilder::GenerateTransfer(ref_ptr<dp::GraphicsContext> context
     }
   }
 
-  float const kInnerScale = 1.0f;
-  float const kOuterScale = 1.5f;
+  float constexpr kInnerScale = 1.0f;
+  float constexpr kOuterScale = 1.5f;
 
   auto const outerColor = GetColorConstant(kTransitTransferOuterColor);
   auto const innerColor = GetColorConstant(kTransitTransferInnerColor);
@@ -1423,8 +1423,8 @@ void TransitSchemeBuilder::GenerateTransfer(ref_ptr<dp::GraphicsContext> context
 
   CHECK_GREATER(maxLinesCount, 0, ());
 
-  float const kInnerScale = 1.0f;
-  float const kOuterScale = 1.5f;
+  float constexpr kInnerScale = 1.0f;
+  float constexpr kOuterScale = 1.5f;
 
   auto const outerColor = GetColorConstant(kTransitTransferOuterColor);
   auto const innerColor = GetColorConstant(kTransitTransferInnerColor);
diff --git a/libs/drape_frontend/user_event_stream.cpp b/libs/drape_frontend/user_event_stream.cpp
index c21495520..be8f90629 100644
--- a/libs/drape_frontend/user_event_stream.cpp
+++ b/libs/drape_frontend/user_event_stream.cpp
@@ -1246,11 +1246,11 @@ void UserEventStream::UpdateDoubleTapAndHold(Touch const & touch)
 {
   TEST_CALL(DOUBLE_TAP_AND_HOLD);
   ASSERT_EQUAL(m_state, STATE_DOUBLE_TAP_HOLD, ());
-  float const kPowerModifier = 10.0f;
+  float constexpr kPowerModifier = 10.0f;
 #if defined(OMIM_OS_IPHONE) || defined(OMIM_OS_MAC)
-  int const kPlatformScaleModifier = -1;
+  int constexpr kPlatformScaleModifier = -1;
 #else
-  int const kPlatformScaleModifier = 1;
+  int constexpr kPlatformScaleModifier = 1;
 #endif
   double const scaleFactor = exp(kPowerModifier * (touch.m_location.y - m_startDoubleTapAndHold.y) /
                                  GetCurrentScreen().PixelRectIn3d().SizeY() * kPlatformScaleModifier);
diff --git a/libs/drape_frontend/user_event_stream.hpp b/libs/drape_frontend/user_event_stream.hpp
index 3e27b69fb..fba39abad 100644
--- a/libs/drape_frontend/user_event_stream.hpp
+++ b/libs/drape_frontend/user_event_stream.hpp
@@ -21,8 +21,8 @@
 
 namespace df
 {
-int const kDoNotChangeZoom = -1;
-double const kDoNotAutoZoom = -1.0;
+int constexpr kDoNotChangeZoom = -1;
+double constexpr kDoNotAutoZoom = -1.0;
 
 using TAnimationCreator = std::function<drape_ptr<Animation>(ref_ptr<Animation>)>;
 
diff --git a/libs/drape_frontend/user_mark_generator.cpp b/libs/drape_frontend/user_mark_generator.cpp
index dbe1ef195..97b10f648 100644
--- a/libs/drape_frontend/user_mark_generator.cpp
+++ b/libs/drape_frontend/user_mark_generator.cpp
@@ -12,7 +12,7 @@
 
 namespace df
 {
-std::array<int, 3> const kLineIndexingLevels = {1, 7, 11};
+std::array<int, 3> constexpr kLineIndexingLevels = {1, 7, 11};
 
 UserMarkGenerator::UserMarkGenerator(TFlushFn const & flushFn) : m_flushFn(flushFn)
 {
diff --git a/libs/drape_frontend/visual_params.cpp b/libs/drape_frontend/visual_params.cpp
index 9182520d7..74c16356b 100644
--- a/libs/drape_frontend/visual_params.cpp
+++ b/libs/drape_frontend/visual_params.cpp
@@ -128,21 +128,21 @@ uint32_t VisualParams::GetTileSize() const
 uint32_t VisualParams::GetTouchRectRadius() const
 {
   ASSERT_INITED;
-  float const kRadiusInPixels = 20.0f;
+  float constexpr kRadiusInPixels = 20.0f;
   return static_cast<uint32_t>(kRadiusInPixels * GetVisualScale());
 }
 
 double VisualParams::GetDragThreshold() const
 {
   ASSERT_INITED;
-  double const kDragThresholdInPixels = 10.0;
+  double constexpr kDragThresholdInPixels = 10.0;
   return kDragThresholdInPixels * GetVisualScale();
 }
 
 double VisualParams::GetScaleThreshold() const
 {
   ASSERT_INITED;
-  double const kScaleThresholdInPixels = 2.0;
+  double constexpr kScaleThresholdInPixels = 2.0;
   return kScaleThresholdInPixels * GetVisualScale();
 }
 
@@ -305,7 +305,7 @@ void ExtractZoomFactors(ScreenBase const & s, double & zoom, int & index, float
 
 double GetNormalizedZoomLevel(double screenScale, int minZoom)
 {
-  double const kMaxZoom = scales::GetUpperStyleScale() + 1.0;
+  double constexpr kMaxZoom = scales::GetUpperStyleScale() + 1.0;
   return math::Clamp((GetZoomLevel(screenScale) - minZoom) / (kMaxZoom - minZoom), 0.0, 1.0);
 }
 
diff --git a/libs/editor/changeset_wrapper.cpp b/libs/editor/changeset_wrapper.cpp
index 75198344b..a26a6fcd2 100644
--- a/libs/editor/changeset_wrapper.cpp
+++ b/libs/editor/changeset_wrapper.cpp
@@ -177,7 +177,7 @@ editor::XMLFeature ChangesetWrapper::GetMatchingNodeFeatureFromOSM(m2::PointD co
 
 editor::XMLFeature ChangesetWrapper::GetMatchingAreaFeatureFromOSM(std::vector<m2::PointD> const & geometry)
 {
-  auto const kSamplePointsCount = 3;
+  auto constexpr kSamplePointsCount = 3;
   bool hasRelation = false;
   // Try several points in case of poor osm response.
   for (auto const & pt : NaiveSample(geometry, kSamplePointsCount))
diff --git a/libs/editor/feature_matcher.cpp b/libs/editor/feature_matcher.cpp
index c3147d49c..0fb2e3d6a 100644
--- a/libs/editor/feature_matcher.cpp
+++ b/libs/editor/feature_matcher.cpp
@@ -29,7 +29,7 @@ using AreaType = bg::default_area_result<Polygon>::type;
 using ForEachRefFn = std::function<void(XMLFeature const & xmlFt)>;
 using ForEachWayFn = std::function<void(pugi::xml_node const & way, std::string const & role)>;
 
-double const kPointDiffEps = 1e-5;
+double constexpr kPointDiffEps = 1e-5;
 
 void AddInnerIfNeeded(pugi::xml_document const & osmResponse, pugi::xml_node const & way, Polygon & dest)
 {
diff --git a/libs/ge0/parser.cpp b/libs/ge0/parser.cpp
index 8cd997101..8c71a30d2 100644
--- a/libs/ge0/parser.cpp
+++ b/libs/ge0/parser.cpp
@@ -48,11 +48,11 @@ bool Ge0Parser::Parse(std::string const & url, Result & result)
 
 bool Ge0Parser::ParseAfterPrefix(std::string const & url, size_t from, Result & result)
 {
-  size_t const kEncodedZoomAndCoordinatesLength = 10;
+  size_t constexpr kEncodedZoomAndCoordinatesLength = 10;
   if (url.size() < from + kEncodedZoomAndCoordinatesLength)
     return false;
 
-  size_t const kMaxNameLength = 256;
+  size_t constexpr kMaxNameLength = 256;
 
   size_t const posZoom = from;
   size_t const posLatLon = posZoom + 1;
diff --git a/libs/ge0/url_generator.hpp b/libs/ge0/url_generator.hpp
index b3c707b03..2c9ddb83d 100644
--- a/libs/ge0/url_generator.hpp
+++ b/libs/ge0/url_generator.hpp
@@ -5,8 +5,8 @@
 namespace ge0
 {
 // Max number of base64 bytes to encode a geo point.
-inline static int const kMaxPointBytes = 10;
-inline static int const kMaxCoordBits = kMaxPointBytes * 3;
+inline static int constexpr kMaxPointBytes = 10;
+inline static int constexpr kMaxCoordBits = kMaxPointBytes * 3;
 
 // Generates a short url.
 //
diff --git a/libs/geometry/clipping.cpp b/libs/geometry/clipping.cpp
index ec77747a9..f1fa36bc1 100644
--- a/libs/geometry/clipping.cpp
+++ b/libs/geometry/clipping.cpp
@@ -235,7 +235,7 @@ void ClipPathByRectBeforeSmooth(m2::RectD const & rect, std::vector<m2::PointD>
 
   m2::PointD guideFront;
   m2::PointD guideBack;
-  double const kEps = 1e-5;
+  double constexpr kEps = 1e-5;
   if (path.front().EqualDxDy(path.back(), kEps))
   {
     guideFront = path[path.size() - 2];
diff --git a/libs/geometry/intersection_score.hpp b/libs/geometry/intersection_score.hpp
index 0159fa82d..1abc7fa18 100644
--- a/libs/geometry/intersection_score.hpp
+++ b/libs/geometry/intersection_score.hpp
@@ -114,7 +114,7 @@ impl::Polygon PointsToPolygon(Container const & points)
 template <typename Container>
 impl::MultiPolygon TrianglesToPolygon(Container const & points)
 {
-  size_t const kTriangleSize = 3;
+  size_t constexpr kTriangleSize = 3;
   if (points.size() % kTriangleSize != 0)
     MYTHROW(geometry::NotAPolygonException, ("Count of points must be multiple of", kTriangleSize));
 
diff --git a/libs/geometry/region2d.hpp b/libs/geometry/region2d.hpp
index 0f8f39c3c..e3a4b3266 100644
--- a/libs/geometry/region2d.hpp
+++ b/libs/geometry/region2d.hpp
@@ -330,7 +330,7 @@ public:
     std::uniform_real_distribution<> distrX(m_rect.minX(), m_rect.maxX());
     std::uniform_real_distribution<> distrY(m_rect.minY(), m_rect.maxY());
 
-    size_t const kMaxIterations = 1000;
+    size_t constexpr kMaxIterations = 1000;
     for (size_t it = 0; it < kMaxIterations; ++it)
     {
       auto const x = distrX(engine);
diff --git a/libs/geometry/segment2d.cpp b/libs/geometry/segment2d.cpp
index 5e0cd32be..6a2a402cb 100644
--- a/libs/geometry/segment2d.cpp
+++ b/libs/geometry/segment2d.cpp
@@ -36,7 +36,7 @@ bool IsPointOnSegment(PointD const & pt, PointD const & p1, PointD const & p2)
   // better ideas how to check whether pt belongs to (p1, p2) segment
   // more precisely or without kEps, feel free to submit a pull
   // request.
-  double const kEps = 1e-100;
+  double constexpr kEps = 1e-100;
   return IsPointOnSegmentEps(pt, p1, p2, kEps);
 }
 
diff --git a/libs/indexer/editable_map_object.cpp b/libs/indexer/editable_map_object.cpp
index d6758b436..53856ef0d 100644
--- a/libs/indexer/editable_map_object.cpp
+++ b/libs/indexer/editable_map_object.cpp
@@ -490,8 +490,8 @@ bool EditableMapObject::ValidatePhoneList(string const & phone)
   if (phone.empty())
     return true;
 
-  auto const kMaxNumberLen = 15;
-  auto const kMinNumberLen = 5;
+  auto constexpr kMaxNumberLen = 15;
+  auto constexpr kMinNumberLen = 5;
 
   if (phone.size() < kMinNumberLen)
     return false;
diff --git a/libs/indexer/feature_to_osm.hpp b/libs/indexer/feature_to_osm.hpp
index 7f3f8fc26..9880c7292 100644
--- a/libs/indexer/feature_to_osm.hpp
+++ b/libs/indexer/feature_to_osm.hpp
@@ -130,9 +130,9 @@ public:
   };
 
   inline static std::string const kHeaderMagic = "mwmftosm";
-  inline static Version const kLatestVersion = FeatureIdToGeoObjectIdSerDes::Version::V0;
-  inline static size_t const kMagicAndVersionSize = 9;
-  inline static size_t const kHeaderOffset = 16;
+  inline static Version constexpr kLatestVersion = FeatureIdToGeoObjectIdSerDes::Version::V0;
+  inline static size_t constexpr kMagicAndVersionSize = 9;
+  inline static size_t constexpr kHeaderOffset = 16;
 
   struct HeaderV0
   {
diff --git a/libs/indexer/feature_visibility.cpp b/libs/indexer/feature_visibility.cpp
index 2e49656bd..2ffbf61d2 100644
--- a/libs/indexer/feature_visibility.cpp
+++ b/libs/indexer/feature_visibility.cpp
@@ -303,7 +303,7 @@ int GetMinDrawableScale(FeatureType & ft)
 
 int GetMinDrawableScale(TypesHolder const & types, m2::RectD const & limitRect)
 {
-  int const upBound = scales::GetUpperStyleScale();
+  int constexpr upBound = scales::GetUpperStyleScale();
 
   for (int level = 0; level <= upBound; ++level)
     if (IsDrawableForIndex(types, limitRect, level))
@@ -315,7 +315,7 @@ int GetMinDrawableScale(TypesHolder const & types, m2::RectD const & limitRect)
 /*
 int GetMinDrawableScaleGeometryOnly(TypesHolder const & types, m2::RectD const & limitRect)
 {
-  int const upBound = scales::GetUpperStyleScale();
+  int constexpr upBound = scales::GetUpperStyleScale();
 
   for (int level = 0; level <= upBound; ++level)
   {
@@ -329,7 +329,7 @@ int GetMinDrawableScaleGeometryOnly(TypesHolder const & types, m2::RectD const &
 
 int GetMinDrawableScaleClassifOnly(TypesHolder const & types)
 {
-  int const upBound = scales::GetUpperStyleScale();
+  int constexpr upBound = scales::GetUpperStyleScale();
 
   for (int level = 0; level <= upBound; ++level)
     if (IsDrawableForIndexClassifOnly(types, level))
@@ -406,7 +406,7 @@ bool IsDrawableForRules(TypesHolder const & types, int level, int rules)
 
 pair<int, int> GetDrawableScaleRangeForRules(TypesHolder const & types, int rules)
 {
-  int const upBound = scales::GetUpperStyleScale();
+  int constexpr upBound = scales::GetUpperStyleScale();
   int lowL = -1;
   for (int level = 0; level <= upBound; ++level)
   {
diff --git a/libs/kml/serdes.cpp b/libs/kml/serdes.cpp
index b1007a6a2..38f694568 100644
--- a/libs/kml/serdes.cpp
+++ b/libs/kml/serdes.cpp
@@ -26,7 +26,7 @@ std::string_view constexpr kPair = "Pair";
 std::string_view constexpr kExtendedData = "ExtendedData";
 std::string const kCompilation = "mwm:compilation";
 
-std::string_view const kCoordinates = "coordinates";
+std::string_view constexpr kCoordinates = "coordinates";
 
 bool IsTrack(std::string const & s)
 {
diff --git a/libs/map/bookmark_manager.cpp b/libs/map/bookmark_manager.cpp
index e52e13643..89065ca71 100644
--- a/libs/map/bookmark_manager.cpp
+++ b/libs/map/bookmark_manager.cpp
@@ -41,9 +41,9 @@ std::string const kLastEditedBookmarkColor = "LastBookmarkColor";
 std::string const kMetadataFileName = "bm.json";
 std::string const kSortingTypeProperty = "sortingType";
 std::string const kLargestBookmarkSymbolName = "bookmark-default-m";
-size_t const kMinCommonTypesCount = 3;
-double const kNearDistanceInMeters = 20 * 1000.0;
-double const kMyPositionTrackSnapInMeters = 20.0;
+size_t constexpr kMinCommonTypesCount = 3;
+double constexpr kNearDistanceInMeters = 20 * 1000.0;
+double constexpr kMyPositionTrackSnapInMeters = 20.0;
 
 std::string const kKMZMimeType = "application/vnd.google-earth.kmz";
 std::string const kGPXMimeType = "application/gpx+xml";
@@ -809,7 +809,7 @@ void BookmarkManager::UpdateElevationMyPosition(kml::TrackId const & trackId)
   double myPositionDistance = TrackSelectionMark::kInvalidDistance;
   if (m_myPositionMark->HasPosition())
   {
-    double const kEps = 1e-5;
+    double constexpr kEps = 1e-5;
     if (m_lastElevationMyPosition.EqualDxDy(m_myPositionMark->GetPivot(), kEps))
       return;
     m_lastElevationMyPosition = m_myPositionMark->GetPivot();
@@ -833,7 +833,7 @@ void BookmarkManager::UpdateElevationMyPosition(kml::TrackId const & trackId)
   auto es = GetEditSession();
   auto trackSelectionMark = GetMarkForEdit<TrackSelectionMark>(markId);
 
-  double const kEpsMeters = 1e-2;
+  double constexpr kEpsMeters = 1e-2;
   if (!AlmostEqualAbs(trackSelectionMark->GetMyPositionDistance(), myPositionDistance, kEpsMeters))
   {
     trackSelectionMark->SetMyPositionDistance(myPositionDistance);
diff --git a/libs/map/extrapolation_benchmark/extrapolation_benchmark.cpp b/libs/map/extrapolation_benchmark/extrapolation_benchmark.cpp
index 1e5b1c36a..7119764ab 100644
--- a/libs/map/extrapolation_benchmark/extrapolation_benchmark.cpp
+++ b/libs/map/extrapolation_benchmark/extrapolation_benchmark.cpp
@@ -256,7 +256,7 @@ int main(int argc, char * argv[])
         GpsInfo const extrapolated = LinearExtrapolation(info1, info2, timeMs);
         m2::PointD const extrapolatedMerc = mercator::FromLatLon(extrapolated.m_latitude, extrapolated.m_longitude);
 
-        double const kHalfSquareSide = 100.0;
+        double constexpr kHalfSquareSide = 100.0;
         // |kHalfSquareSide| is chosen based on maximum value of GpsInfo::m_horizontalAccuracy
         // which is used calculation of projection in production code.
         m2::RectD const posSquare =
diff --git a/libs/map/framework.cpp b/libs/map/framework.cpp
index 6783a5bc7..7bc3e5136 100644
--- a/libs/map/framework.cpp
+++ b/libs/map/framework.cpp
@@ -112,7 +112,7 @@ size_t constexpr kMaxTrafficCacheSizeBytes = 64 /* Mb */ * 1024 * 1024;
 // This is temporary solution while we don't have a good filter.
 bool ParseSetGpsTrackMinAccuracyCommand(string const & query)
 {
-  char const kGpsAccuracy[] = "?gpstrackaccuracy:";
+  char constexpr kGpsAccuracy[] = "?gpstrackaccuracy:";
   if (!query.starts_with(kGpsAccuracy))
     return false;
 
diff --git a/libs/map/gps_track_filter.cpp b/libs/map/gps_track_filter.cpp
index 16eaec3ed..950ba4e61 100644
--- a/libs/map/gps_track_filter.cpp
+++ b/libs/map/gps_track_filter.cpp
@@ -11,7 +11,7 @@
 
 namespace
 {
-char const kMinHorizontalAccuracyKey[] = "GpsTrackingMinAccuracy";
+char constexpr kMinHorizontalAccuracyKey[] = "GpsTrackingMinAccuracy";
 
 // Minimal horizontal accuracy is required to skip 'bad' points.
 // Use 250 meters to allow points from a pure GPS + GPS through wifi.
diff --git a/libs/map/gps_tracker.cpp b/libs/map/gps_tracker.cpp
index ca7a17fa8..35d9653b8 100644
--- a/libs/map/gps_tracker.cpp
+++ b/libs/map/gps_tracker.cpp
@@ -14,7 +14,7 @@ using namespace std::chrono;
 namespace
 {
 
-char const kEnabledKey[] = "GpsTrackingEnabled";
+char constexpr kEnabledKey[] = "GpsTrackingEnabled";
 
 inline std::string GetFilePath()
 {
diff --git a/libs/map/routing_manager.cpp b/libs/map/routing_manager.cpp
index 65c2753e0..5507debd4 100644
--- a/libs/map/routing_manager.cpp
+++ b/libs/map/routing_manager.cpp
@@ -44,9 +44,9 @@ using namespace std;
 
 namespace
 {
-char const kRouterTypeKey[] = "router";
+char constexpr kRouterTypeKey[] = "router";
 
-double const kRouteScaleMultiplier = 1.5;
+double constexpr kRouteScaleMultiplier = 1.5;
 
 string const kRoutePointsFile = "route_points.dat";
 
diff --git a/libs/map/routing_mark.cpp b/libs/map/routing_mark.cpp
index 594975d74..f96c606e4 100644
--- a/libs/map/routing_mark.cpp
+++ b/libs/map/routing_mark.cpp
@@ -19,10 +19,10 @@ static std::string const kTransitMarkPrimaryTextOutline = "TransitMarkPrimaryTex
 static std::string const kTransitMarkSecondaryText = "TransitMarkSecondaryText";
 static std::string const kTransitMarkSecondaryTextOutline = "TransitMarkSecondaryTextOutline";
 
-float const kRouteMarkPrimaryTextSize = 10.5f;
-float const kRouteMarkSecondaryTextSize = 10.0f;
-float const kRouteMarkSecondaryOffsetY = 2.0f;
-float const kTransitMarkTextSize = 12.0f;
+float constexpr kRouteMarkPrimaryTextSize = 10.5f;
+float constexpr kRouteMarkSecondaryTextSize = 10.0f;
+float constexpr kRouteMarkSecondaryOffsetY = 2.0f;
+float constexpr kTransitMarkTextSize = 12.0f;
 
 static std::string const kSpeedCameraMarkText = "SpeedCameraMarkText";
 static std::string const kSpeedCameraMarkBg = "SpeedCameraMarkBg";
diff --git a/libs/map/search_api.cpp b/libs/map/search_api.cpp
index 4e1285581..16c4fdde3 100644
--- a/libs/map/search_api.cpp
+++ b/libs/map/search_api.cpp
@@ -28,7 +28,7 @@ namespace
 {
 using BookmarkIdDoc = pair<bookmarks::Id, bookmarks::Doc>;
 
-double const kDistEqualQueryMeters = 100.0;
+double constexpr kDistEqualQueryMeters = 100.0;
 double const kDistEqualQueryMercator = mercator::MetersToMercator(kDistEqualQueryMeters);
 
 // Cancels search query by |handle|.
diff --git a/libs/map/search_mark.cpp b/libs/map/search_mark.cpp
index db3002543..46bd285ac 100644
--- a/libs/map/search_mark.cpp
+++ b/libs/map/search_mark.cpp
@@ -85,8 +85,8 @@ namespace
 {
 df::ColorConstant const kColorConstant = "SearchmarkDefault";
 
-float const kVisitedSymbolOpacity = 0.7f;
-float const kOutOfFiltersSymbolOpacity = 0.4f;
+float constexpr kVisitedSymbolOpacity = 0.7f;
+float constexpr kOutOfFiltersSymbolOpacity = 0.4f;
 
 std::array<std::string, SearchMarkType::Count> const kSymbols = {
     "search-result",                          // Default.
diff --git a/libs/map/traffic_manager.cpp b/libs/map/traffic_manager.cpp
index 3986f7d32..66114e50b 100644
--- a/libs/map/traffic_manager.cpp
+++ b/libs/map/traffic_manager.cpp
@@ -195,7 +195,7 @@ void TrafficManager::UpdateMyPosition(MyPosition const & myPosition)
 {
   // Side of square around |myPosition|. Every mwm which is covered by the square
   // will get traffic info.
-  double const kSquareSideM = 5000.0;
+  double constexpr kSquareSideM = 5000.0;
   m_currentPosition = {myPosition, true /* initialized */};
 
   if (!IsEnabled() || IsInvalidState() || m_isPaused)
diff --git a/libs/map/transit/transit_display.cpp b/libs/map/transit/transit_display.cpp
index 320c4edc1..f57e1f006 100644
--- a/libs/map/transit/transit_display.cpp
+++ b/libs/map/transit/transit_display.cpp
@@ -25,18 +25,18 @@ map<TransitType, string> const kTransitSymbols = {{TransitType::Subway, "transit
 
 namespace
 {
-float const kStopMarkerScale = 2.2f;
-float const kTransferMarkerScale = 4.0f;
-float const kGateBgScale = 1.2f;
+float constexpr kStopMarkerScale = 2.2f;
+float constexpr kTransferMarkerScale = 4.0f;
+float constexpr kGateBgScale = 1.2f;
 
-int const kSmallIconZoom = 1;
-int const kMediumIconZoom = 10;
+int constexpr kSmallIconZoom = 1;
+int constexpr kMediumIconZoom = 10;
 
-int const kMinStopTitleZoom = 13;
+int constexpr kMinStopTitleZoom = 13;
 
-int const kTransferTitleOffset = 2;
-int const kStopTitleOffset = 0;
-int const kGateTitleOffset = 0;
+int constexpr kTransferTitleOffset = 2;
+int constexpr kStopTitleOffset = 0;
+int constexpr kGateTitleOffset = 0;
 
 std::string const kZeroIcon = "zero-icon";
 
diff --git a/libs/map/transit/transit_reader.cpp b/libs/map/transit/transit_reader.cpp
index 49990749f..cdd9bfa8c 100644
--- a/libs/map/transit/transit_reader.cpp
+++ b/libs/map/transit/transit_reader.cpp
@@ -28,7 +28,7 @@ size_t constexpr kMaxTransitCacheSizeBytes = 5 /* Mb */ * 1024 * 1024;
 
 size_t CalculateCacheSize(TransitDisplayInfo const & transitInfo)
 {
-  size_t const kSegmentSize = 72;
+  size_t constexpr kSegmentSize = 72;
   size_t cacheSize = 0;
   for (auto const & shape : transitInfo.m_shapesSubway)
     cacheSize += shape.second.GetPolyline().size() * kSegmentSize;
diff --git a/libs/platform/local_country_file_utils.cpp b/libs/platform/local_country_file_utils.cpp
index bb0d08dc1..2c23d2bc8 100644
--- a/libs/platform/local_country_file_utils.cpp
+++ b/libs/platform/local_country_file_utils.cpp
@@ -29,9 +29,9 @@ using std::string;
 
 namespace
 {
-char const kBitsExt[] = ".bftsegbits";
-char const kNodesExt[] = ".bftsegnodes";
-char const kOffsetsExt[] = ".offsets";
+char constexpr kBitsExt[] = ".bftsegbits";
+char constexpr kNodesExt[] = ".bftsegnodes";
+char constexpr kOffsetsExt[] = ".offsets";
 
 string GetAdditionalWorldScope()
 {
diff --git a/libs/platform/servers_list.cpp b/libs/platform/servers_list.cpp
index ab6dd7901..ac937e7bb 100644
--- a/libs/platform/servers_list.cpp
+++ b/libs/platform/servers_list.cpp
@@ -14,8 +14,8 @@ namespace downloader
 
 std::optional<MetaConfig> ParseMetaConfig(std::string const & jsonStr)
 {
-  char const kSettings[] = "settings";
-  char const kServers[] = "servers";
+  char constexpr kSettings[] = "settings";
+  char constexpr kServers[] = "servers";
 
   MetaConfig outMetaConfig;
   try
diff --git a/libs/routing/car_directions.cpp b/libs/routing/car_directions.cpp
index 2642ddc8c..cecced071 100644
--- a/libs/routing/car_directions.cpp
+++ b/libs/routing/car_directions.cpp
@@ -30,7 +30,7 @@ void FixupCarTurns(vector<RouteSegment> & routeSegments)
   // (1) the route enters to the roundabout;
   // (2) the route leaves the roundabout;
   uint32_t exitNum = 0;
-  size_t const kInvalidEnter = numeric_limits<size_t>::max();
+  size_t constexpr kInvalidEnter = numeric_limits<size_t>::max();
   size_t enterRoundAbout = kInvalidEnter;
 
   for (size_t idx = 0; idx < routeSegments.size(); ++idx)
diff --git a/libs/routing/pedestrian_directions.cpp b/libs/routing/pedestrian_directions.cpp
index 23ff6e1b0..3264242f6 100644
--- a/libs/routing/pedestrian_directions.cpp
+++ b/libs/routing/pedestrian_directions.cpp
@@ -86,7 +86,7 @@ size_t PedestrianDirectionsEngine::GetTurnDirection(IRoutingResult const & resul
 
 void PedestrianDirectionsEngine::FixupTurns(vector<RouteSegment> & routeSegments)
 {
-  double const kMergeDistMeters = 15.0;
+  double constexpr kMergeDistMeters = 15.0;
 
   for (size_t idx = 0; idx < routeSegments.size(); ++idx)
   {
diff --git a/libs/routing/restrictions_serialization.hpp b/libs/routing/restrictions_serialization.hpp
index 196e4b0be..1a49843a3 100644
--- a/libs/routing/restrictions_serialization.hpp
+++ b/libs/routing/restrictions_serialization.hpp
@@ -159,7 +159,7 @@ public:
   }
 
 private:
-  static uint32_t const kDefaultFeatureId = 0;
+  static uint32_t constexpr kDefaultFeatureId = 0;
 
   /// \brief Serializes a range of restrictions form |begin| to |end| to |sink|.
   /// \param begin is an iterator to the first item to serialize.
diff --git a/libs/routing/speed_camera_prohibition.cpp b/libs/routing/speed_camera_prohibition.cpp
index f7f091696..3927185cc 100644
--- a/libs/routing/speed_camera_prohibition.cpp
+++ b/libs/routing/speed_camera_prohibition.cpp
@@ -7,8 +7,10 @@
 
 namespace
 {
+using CountrySetT = std::unordered_set<std::string_view>;
+
 // List of country names where mwm should be generated without speed cameras.
-std::vector<std::string> kSpeedCamerasProhibitedCountries = {
+CountrySetT kSpeedCamerasProhibitedCountries = {
     "Germany",
     "Macedonia",
     "Switzerland",
@@ -17,11 +19,11 @@ std::vector<std::string> kSpeedCamerasProhibitedCountries = {
 };
 
 // List of country names where an end user should be warned about speed cameras.
-std::vector<std::string> kSpeedCamerasPartlyProhibitedCountries = {
+CountrySetT kSpeedCamerasPartlyProhibitedCountries = {
     "France",
 };
 
-bool IsMwmContained(platform::CountryFile const & mwm, std::vector<std::string> const & countryList)
+bool IsMwmContained(platform::CountryFile const & mwm, CountrySetT const & countryList)
 {
   return std::any_of(countryList.cbegin(), countryList.cend(),
                      [&mwm](auto const & country) { return mwm.GetName().starts_with(country); });
diff --git a/libs/routing/speed_camera_prohibition.hpp b/libs/routing/speed_camera_prohibition.hpp
index 92a208907..83206afd8 100644
--- a/libs/routing/speed_camera_prohibition.hpp
+++ b/libs/routing/speed_camera_prohibition.hpp
@@ -4,7 +4,7 @@
 
 namespace routing
 {
-std::string const kDebugSpeedCamSetting = "DebugSpeedCam";
+std::string_view constexpr kDebugSpeedCamSetting = "DebugSpeedCam";
 
 /// \returns true if any information about speed cameras is prohibited in |mwm|.
 bool AreSpeedCamerasProhibited(platform::CountryFile const & mwm);
diff --git a/libs/search/bookmarks/types.cpp b/libs/search/bookmarks/types.cpp
index 967c1f169..bc5408326 100644
--- a/libs/search/bookmarks/types.cpp
+++ b/libs/search/bookmarks/types.cpp
@@ -4,6 +4,6 @@ namespace search
 {
 namespace bookmarks
 {
-GroupId const kInvalidGroupId = std::numeric_limits<GroupId>::max();
+GroupId constexpr kInvalidGroupId = std::numeric_limits<GroupId>::max();
 }  // namespace bookmarks
 }  // namespace search
diff --git a/libs/search/cbv.cpp b/libs/search/cbv.cpp
index 8a36c0c0b..3bb081224 100644
--- a/libs/search/cbv.cpp
+++ b/libs/search/cbv.cpp
@@ -9,7 +9,7 @@ namespace search
 {
 namespace
 {
-uint64_t const kModulo = 18446744073709551557LLU;
+uint64_t constexpr kModulo = 18446744073709551557LLU;
 }  // namespace
 
 // static
diff --git a/libs/search/editor_delegate.cpp b/libs/search/editor_delegate.cpp
index fb86969a1..b33e47836 100644
--- a/libs/search/editor_delegate.cpp
+++ b/libs/search/editor_delegate.cpp
@@ -38,7 +38,7 @@ string EditorDelegate::GetOriginalFeatureStreet(FeatureID const & fid) const
 
 void EditorDelegate::ForEachFeatureAtPoint(osm::Editor::FeatureTypeFn && fn, m2::PointD const & point) const
 {
-  auto const kToleranceMeters = 1e-2;
+  auto constexpr kToleranceMeters = 1e-2;
   indexer::ForEachFeatureAtPoint(m_dataSource, std::move(fn), point, kToleranceMeters);
 }
 }  // namespace search
diff --git a/libs/search/features_layer_matcher.hpp b/libs/search/features_layer_matcher.hpp
index 5a164205c..c73352e44 100644
--- a/libs/search/features_layer_matcher.hpp
+++ b/libs/search/features_layer_matcher.hpp
@@ -53,7 +53,7 @@ namespace search
 class FeaturesLayerMatcher
 {
 public:
-  static uint32_t const kInvalidId = std::numeric_limits<uint32_t>::max();
+  static uint32_t constexpr kInvalidId = std::numeric_limits<uint32_t>::max();
   static int constexpr kBuildingRadiusMeters = 50;
   static int constexpr kComplexPoiRadiusMeters = 300;
   static int constexpr kStreetRadiusMeters = 100;
diff --git a/libs/search/geocoder.cpp b/libs/search/geocoder.cpp
index 331f7c8fa..147e6f501 100644
--- a/libs/search/geocoder.cpp
+++ b/libs/search/geocoder.cpp
@@ -1429,7 +1429,7 @@ void Geocoder::MatchPOIsAndBuildings(BaseContext & ctx, size_t curToken, CBV con
 
   // Clusters of features by search type. Each cluster is a sorted
   // list of ids.
-  size_t const kNumClusters = Model::TYPE_BUILDING + 1;
+  size_t constexpr kNumClusters = Model::TYPE_BUILDING + 1;
   vector<uint32_t> clusters[kNumClusters];
 
   // Appends |featureId| to the end of the corresponding cluster, if
diff --git a/libs/search/intermediate_result.cpp b/libs/search/intermediate_result.cpp
index cdedcfb7b..bd87c447a 100644
--- a/libs/search/intermediate_result.cpp
+++ b/libs/search/intermediate_result.cpp
@@ -28,7 +28,7 @@ namespace
 {
 class SkipRegionInfo
 {
-  static size_t const kCount = 2;
+  static size_t constexpr kCount = 2;
   uint32_t m_types[kCount];
 
 public:
diff --git a/libs/search/locality_finder.cpp b/libs/search/locality_finder.cpp
index 404bc0f2a..48b5578b6 100644
--- a/libs/search/locality_finder.cpp
+++ b/libs/search/locality_finder.cpp
@@ -20,8 +20,8 @@ using namespace std;
 
 namespace
 {
-double const kMaxCityRadiusMeters = 30000.0;
-double const kMaxVillageRadiusMeters = 2000.0;
+double constexpr kMaxCityRadiusMeters = 30000.0;
+double constexpr kMaxVillageRadiusMeters = 2000.0;
 
 struct Filter
 {
@@ -126,7 +126,7 @@ int GetVillagesScale()
 
   // Needed for backward compatibility. |kCompatibilityVillagesMinDrawableScale| should be set to
   // maximal value we have in mwms over all data versions.
-  int const kCompatibilityVillagesMinDrawableScale = 13;
+  int constexpr kCompatibilityVillagesMinDrawableScale = 13;
   ASSERT_LESS_OR_EQUAL(currentVillagesMinDrawableScale, kCompatibilityVillagesMinDrawableScale,
                        ("Set kCompatibilityVillagesMinDrawableScale to", currentVillagesMinDrawableScale));
   return max(currentVillagesMinDrawableScale, kCompatibilityVillagesMinDrawableScale);
diff --git a/libs/search/locality_scorer.cpp b/libs/search/locality_scorer.cpp
index 997f1cad8..48fe41a7a 100644
--- a/libs/search/locality_scorer.cpp
+++ b/libs/search/locality_scorer.cpp
@@ -307,7 +307,7 @@ void LocalityScorer::GetDocVecs(uint32_t localityId, vector<DocVec> & dvs) const
 
 double LocalityScorer::GetSimilarity(QueryVec & qv, IdfMap & docIdfs, vector<DocVec> & dvc) const
 {
-  double const kScale = 1e6;
+  double constexpr kScale = 1e6;
 
   double similarity = 0;
   for (auto & dv : dvc)
diff --git a/libs/search/nested_rects_cache.cpp b/libs/search/nested_rects_cache.cpp
index 5793cb685..c24babe21 100644
--- a/libs/search/nested_rects_cache.cpp
+++ b/libs/search/nested_rects_cache.cpp
@@ -16,7 +16,7 @@ namespace search
 {
 namespace
 {
-double const kPositionToleranceMeters = 15.0;
+double constexpr kPositionToleranceMeters = 15.0;
 }  // namespace
 
 NestedRectsCache::NestedRectsCache(DataSource const & dataSource)
diff --git a/libs/search/postcode_points.cpp b/libs/search/postcode_points.cpp
index 5ea9569b6..3b6a9d4af 100644
--- a/libs/search/postcode_points.cpp
+++ b/libs/search/postcode_points.cpp
@@ -49,7 +49,7 @@ PostcodePoints::PostcodePoints(MwmValue const & value)
   m_points = CentersTable::LoadV1(*m_pointsSubReader);
   CHECK(m_points, ());
 
-  auto const kPostcodeRadiusMultiplier = 5.0;
+  auto constexpr kPostcodeRadiusMultiplier = 5.0;
   auto const area = value.GetHeader().GetBounds().Area();
   auto const count = static_cast<double>(m_points->Count());
   CHECK_NOT_EQUAL(count, 0.0, ("Zero postcodes should not be serialized to", POSTCODE_POINTS_FILE_TAG, "section"));
diff --git a/libs/search/processor.cpp b/libs/search/processor.cpp
index b0273f097..f9b4c3bb4 100644
--- a/libs/search/processor.cpp
+++ b/libs/search/processor.cpp
@@ -143,7 +143,7 @@ bool EatVersion(string & s, uint32_t & version)
     return true;
   }
 
-  size_t const kVersionLength = 6;
+  size_t constexpr kVersionLength = 6;
   if (s.size() >= kVersionLength && all_of(s.begin(), s.begin() + kVersionLength, ::isdigit) &&
       (s.size() == kVersionLength || !isdigit(s[kVersionLength + 1])))
   {
diff --git a/libs/search/search_trie.hpp b/libs/search/search_trie.hpp
index f53ca9069..d5468de4c 100644
--- a/libs/search/search_trie.hpp
+++ b/libs/search/search_trie.hpp
@@ -4,6 +4,6 @@
 
 namespace search
 {
-static uint8_t const kCategoriesLang = 128;
-static uint8_t const kPostcodesLang = 129;
+static uint8_t constexpr kCategoriesLang = 128;
+static uint8_t constexpr kPostcodesLang = 129;
 }  // namespace search
diff --git a/libs/storage/country_info_getter.cpp b/libs/storage/country_info_getter.cpp
index 99a5f3fc0..651952e9c 100644
--- a/libs/storage/country_info_getter.cpp
+++ b/libs/storage/country_info_getter.cpp
@@ -22,7 +22,7 @@ namespace storage
 {
 namespace
 {
-size_t const kInvalidId = std::numeric_limits<size_t>::max();
+size_t constexpr kInvalidId = std::numeric_limits<size_t>::max();
 }  // namespace
 
 // CountryInfoGetterBase ---------------------------------------------------------------------------
diff --git a/libs/storage/diff_scheme/diff_scheme_loader.cpp b/libs/storage/diff_scheme/diff_scheme_loader.cpp
index 21077193a..fcccd96fd 100644
--- a/libs/storage/diff_scheme/diff_scheme_loader.cpp
+++ b/libs/storage/diff_scheme/diff_scheme_loader.cpp
@@ -21,13 +21,13 @@ namespace
 {
 using namespace storage::diffs;
 
-char const kMaxVersionKey[] = "max_version";
-char const kMwmsKey[] = "mwms";
-char const kNameKey[] = "name";
-char const kSizeKey[] = "size";
-char const kVersionKey[] = "version";
+char constexpr kMaxVersionKey[] = "max_version";
+char constexpr kMwmsKey[] = "mwms";
+char constexpr kNameKey[] = "name";
+char constexpr kSizeKey[] = "size";
+char constexpr kVersionKey[] = "version";
 
-auto const kTimeoutInSeconds = 5.0;
+auto constexpr kTimeoutInSeconds = 5.0;
 
 string SerializeCheckerData(LocalMapsInfo const & info)
 {
diff --git a/libs/storage/storage.cpp b/libs/storage/storage.cpp
index 68dea01ea..665d3df53 100644
--- a/libs/storage/storage.cpp
+++ b/libs/storage/storage.cpp
@@ -47,10 +47,10 @@ string const kDownloadQueueKey = "DownloadQueue";
 // is most likely already fixed on OSM. Not limited to the latest one or two versions,
 // because a user can forget to update maps after a new app version has been installed
 // automatically in the background.
-uint64_t const kMaxSecondsTillLastVersionUpdate = 3600 * 24 * 31 * 3;
+uint64_t constexpr kMaxSecondsTillLastVersionUpdate = 3600 * 24 * 31 * 3;
 // Editing maps older than approximately six months old is disabled, because the device
 // may have been offline for a long time.
-uint64_t const kMaxSecondsTillNoEdits = 3600 * 24 * 31 * 6;
+uint64_t constexpr kMaxSecondsTillNoEdits = 3600 * 24 * 31 * 6;
 
 void DeleteCountryIndexes(LocalCountryFile const & localFile)
 {
diff --git a/libs/traffic/speed_groups.cpp b/libs/traffic/speed_groups.cpp
index 191a747df..88e079bcd 100644
--- a/libs/traffic/speed_groups.cpp
+++ b/libs/traffic/speed_groups.cpp
@@ -4,7 +4,7 @@
 
 namespace traffic
 {
-uint32_t const kSpeedGroupThresholdPercentage[] = {8, 16, 33, 58, 83, 100, 100, 100};
+uint32_t constexpr kSpeedGroupThresholdPercentage[] = {8, 16, 33, 58, 83, 100, 100, 100};
 
 SpeedGroup GetSpeedGroupByPercentage(double p)
 {
diff --git a/libs/traffic/traffic_info.cpp b/libs/traffic/traffic_info.cpp
index e4a339b2e..ce218c896 100644
--- a/libs/traffic/traffic_info.cpp
+++ b/libs/traffic/traffic_info.cpp
@@ -73,7 +73,7 @@ string MakeRemoteURL(string const & name, uint64_t version)
   return ss.str();
 }
 
-char const kETag[] = "etag";
+char constexpr kETag[] = "etag";
 }  // namespace
 
 // TrafficInfo::RoadSegmentId -----------------------------------------------------------------