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std::ranges..._view::size(3) C++ Standard Libary std::ranges..._view::size(3) NAME std::ranges::take_view::size - std::ranges::take_view::size Synopsis constexpr auto size() requires ranges::sized_range<V>; (1) (since C++20) constexpr auto size() const requires ranges::sized_range<const V>; (2) (since C++20) Returns the number of elements, which is the smaller of the count passed to the constructor and the size of the underlying view. Let base_ be the underlying view, count_ be the number passed to the constructor (0 if default constructed). Equivalent to auto n = ranges::size(base_); return ranges::min(n, static_cast<decltype(n)>(count_)); Parameters (none) Return value The number of elements. Example // Run this code #include <ranges> #include <iostream> int main() { constexpr int arr[] {1, 2, 3}; for (int i = 0; i != 6; ++i) { const auto tv = std::ranges::take_view{arr, i}; std::cout << tv.size() << ' '; } } Output: 0 1 2 3 3 3 See also ranges::size returns an integer equal to the size of a range (C++20) (customization point object) ranges::ssize returns a signed integer equal to the size of a range (C++20) (customization point object) http://cppreference.com 2022.07.31 std::ranges..._view::size(3)
NAME | Synopsis | Parameters | Return value | Example | Output: | See also
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