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22 lines
378 B
C++
22 lines
378 B
C++
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// Test for concepts support. Not just the language feature; also headers.
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#include <iostream>
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#include <ranges>
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#include <vector>
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template<typename T>
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concept Foo = std::ranges::input_range<T>;
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template<Foo F> auto foo(F const &r)
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{
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return std::distance(std::begin(r), std::end(r));
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}
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int main()
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{
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std::vector<int> const v{1, 2, 3};
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std::cout << foo(v) << '\n';
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}
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