Organic Maps sources as of 02.04.2025 (fad26bbf22ac3da75e01e62aa01e5c8e11861005)

To expand with full Organic Maps and Maps.ME commits history run:
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search/idf_map.cpp

@@ -0,0 +1,25 @@
+#include "search/idf_map.hpp"
+
+#include "base/assert.hpp"
+
+namespace search
+{
+IdfMap::IdfMap(Delegate const & delegate, double unknownIdf)
+  : m_delegate(delegate), m_unknownIdf(unknownIdf)
+{
+  ASSERT_GREATER(m_unknownIdf, 0.0, ());
+}
+
+double IdfMap::GetImpl(Map & idfs, strings::UniString const & s, bool isPrefix)
+{
+  auto const it = idfs.find(s);
+  if (it != idfs.cend())
+    return it->second;
+
+  auto const df = static_cast<double>(m_delegate.GetNumDocs(s, isPrefix));
+  auto const idf = df == 0 ? m_unknownIdf : 1.0 / df;
+  idfs[s] = idf;
+
+  return idf;
+}
+}  // namespace search