for_each_n std::for_each_n Defined in header<algorithm> template<classInputIt,classSize,classUnaryFunc> InputIt for_each_n(InputIt first, Size n, UnaryFunc f); (1)(since C++17) (constexpr since C++20) template<
std::indirectly_unary_invocable<std::projected<I, Proj>>Fun> constexprfor_each_result<I, Fun> for_each(I first, S last, Fun f, Proj proj={}); (1)(since C++20) template<ranges::input_rangeR,classProj=std::identity, std::indirectly_unary_invocable< ...
#include <algorithm>#include <iomanip>#include <iostream>#include <iterator>#include <set>#include <string_view>template<typenameT>std::ostream&operator<<(std::ostream&out,conststd::set<T>&set){if(set.empty())returnout<<"{}";out<<"{ "<<*set.begin();std::for_each(std::next(set....
struct T { void* operator new(std::size_t) = delete; void* operator new[](std::size_t) = delete("new[] is deleted"); // since C++26 }; T* p = new T; // Error: attempts to call deleted T::operator new T* p = new T[5]; // Error: attempts to call deleted T::opera...
foreach ( $pre_keywords as $keywrd ) { if ( strpos( $keywrd, "std::" ) !== false ) { $post_keywords = explode( "::", $keywrd); $keywords[] = $post_keywords[ count( $post_keywords ) - 1 ];} else if ( strpos( $keywrd, ":" ) !== false ) ...
Sum { Sum() { sum = 0; } void operator()(int n) { sum += n; } int sum; }; int main() { std::vector<int> nums{3, 4, 2, 9, 15, 267}; std::cout << "до: "; for (auto n : nums) { std::cout << n << " "; } std::cout << '\n'; std::for_each(...
(public member class of std::ios_base) Member types and constants Type Explanation openmode stream open mode type The following constants are also defined: Constant Explanation app seek to the end of stream before each write binary open in binary mode in open for reading out open...
showposgenerate a+character for non-negative numeric output: seestd::showpos skipwsskip leading whitespace before certain input operations: seestd::skipws unitbufflush the output after each output operation: seestd::unitbuf uppercasereplace certain lowercase letters with their uppercase equivalents in cer...
#include <algorithm>#include <iomanip>#include <iostream>#include <iterator>#include <set>#include <string_view>template<typenameT>std::ostream&operator<<(std::ostream&out,conststd::set<T>&set){if(set.empty())returnout<<"{}";out<<"{ "<<*set.begin();std::for_each(std::next(set....
std::chrono::months(since C++20)std::chrono::duration</* int20 */,std::ratio<2629746>> std::chrono::years(since C++20)std::chrono::duration</* int17 */,std::ratio<31556952>> Note: each of the predefined duration types up tohourscovers a range of at least ±292 years. ...