FreeBSD Manual Pages
std::ranges..._view::begin(3) C++ Standard Libarystd::ranges..._view::begin(3) NAME std::ranges::drop_while_view::begin - std::ranges::drop_while_view::be- gin Synopsis constexpr auto begin(); (since C++20) Returns an iterator to the first element of the view. Effectively returns ranges::find_if_not(base_, std::cref(pred())), where base_ is the underlying view. The behavior is undefined if *this does not store a predicate. In order to provide the amortized constant time complexity required by the range concept, this function caches the result within the drop_while_view object for use on subsequent calls. Parameters (none) Return value Iterator to the first element of the view. Example // Run this code #include <array> #include <iostream> #include <ranges> int main() { constexpr std::array data{ 0, -1, -2, 3, 1, 4, 1, 5 }; auto view = std::ranges::drop_while_view{ data, [](int x) { return x <= 0; } }; std::cout << *view.begin() << '\n'; } Output: 3 See also end returns an iterator or a sentinel to the end (C++20) (public member function) http://cppreference.com 2022.07.31 std::ranges..._view::begin(3)
NAME | Synopsis | Parameters | Return value | Example | Output: | See also
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=std::ranges::drop_while_view::begin&sektion=3&manpath=FreeBSD+Ports+15.0>