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std::ranges..._view::size(3) C++ Standard Libary std::ranges..._view::size(3) NAME std::ranges::stride_view::size - std::ranges::stride_view::size Synopsis constexpr auto size() requires ranges::sized_range<V>; (since C++23) constexpr auto size() const requires ranges::sized_range<const V>; (since C++23) Returns the number of elements. Let base_ be the underlying view and stride_ be the stored stride value. Equivalent to: return __to_unsigned_like(__div_ceil(ranges::distance(base_), stride_)); Parameters (none) Return value The number of elements. The returned value is calculated as if by expression (ranges::size(base_) / stride_) + ((ranges::size(base_) % stride_ ? 1 : 0). Example // Run this code #include <forward_list> #include <ranges> int main() { namespace vs = std::views; constexpr static auto v = {1, 2, 3, 4, 5}; static_assert ( vs::stride(v, 1).size() == 5 and vs::stride(v, 2).size() == 3 and vs::stride(v, 3).size() == 2 and vs::stride(v, 4).size() == 2 and vs::stride(v, 5).size() == 1 and vs::stride(v, 6).size() == 1 ); std::forward_list list{v}; // auto s = vs::stride(list, 2).size(); // Error: not a sized_range } 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 2024.06.10 std::ranges..._view::size(3)
NAME | Synopsis | Parameters | Return value | Example | See also
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