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30 lines
805 B
C++
30 lines
805 B
C++
#pragma once
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#include <type_traits>
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namespace base
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{
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namespace details
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{
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template <typename T>
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struct ValueType
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{
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using TType = typename std::remove_reference_t<T>::value_type;
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};
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template <typename T>
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using TValueType = typename ValueType<T>::TType;
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} // namespace details
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// Use this function to cast one collection to annother.
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// I.E. list<int> const myList = collection_cast<list>(vector<int>{1, 2, 4, 5});
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// More examples:
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// auto const mySet = collection_cast<set>("aaabcccd");
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// auto const myMap = collection_cast<map>(vector<pair<int, int>>{{1, 2}, {3, 4}});
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template <template<typename ... TArgs> class TTo, typename TFrom>
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auto collection_cast(TFrom && from) -> TTo<details::TValueType<TFrom>>
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{
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return TTo<details::TValueType<TFrom>>(begin(from), end(from));
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}
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} // namespace base
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