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www.reedbeta.com | ||
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www.foonathan.net
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| | | | | The size of std::array is known at compile-time given the type. Yet it only provides a regular .size() member function: template struct array { constexpr std::size_t size() const { return N; } }; This is annoying if you're writing generic code that expects some sort of compile-time sized range. | |
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quuxplusone.github.io
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| | | | | Someone on the cpplang Slack asks: How can I view a std::pair<T, T> as if it were a range of two Ts? That is, fill in the blank in this sample program: template<std::ranges::range R> void increment_all(R&& rg) { for (auto&& elt : rg) { elt = elt + 1; } } template<class T> auto F(std::pair<T, T>& kv) { ~~~~ } int main() { std::pair<int, int> kv = {1, 2}; increment_all(F(kv)); assert(kv.first == 2 && kv.second == 3); std::ranges::fill(F(kv), 4); assert(kv.first == 4 && kv.second == 4); } | |
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tia.mat.br
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without.boats
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