std::reverse_iterator是C++标准库中的一个迭代器适配器,用于反向遍历容器。它的缺点主要有以下几点: 1. 性能较低:由于std::reverse_iterator是通过逆向遍历...
std::reverse_iterator是一种迭代器适配器,它反转给定迭代器的方向,该迭代器必须至少是老式双向迭代器(LegacyBidirectionalIterator)或实现bidirectional_iterator(C++20 起)。换言之,提供双向迭代器时,std::reverse_iterator产生一个新的迭代器,它从底层的双向迭代器所定义的序列的末尾移动到开端。
Returns the underlying base iterator. That isstd::reverse_iterator(it).base() == it. The base iterator refers to the element that is next (from the std::reverse_iterator::iterator_typeperspective) to the element thereverse_iteratoris currently pointing to. That is &*(rit.base() - 1) =...
从零开始学C++之STL（三）：迭代器类vector::iterator 和 vector::reverse_iterator 的实现、迭代器类型...
std::data std::reverse_iterator<Iter>::operator++,+,+=,--,-,-= std::rbegin, std::crbegin std::indirectly_readable std::indirectly_writable std::weakly_incrementable std::insert_iterator std::rend, std::crend std::incrementable std::input_or_output_iterator std::sentinel_for std::sized...
#include <iostream> #include <iterator> #include <vector> int main() { std::vector<int> v = {0, 1, 2, 3, 4, 5}; using RevIt = std::reverse_iterator<std::vector<int>::iterator>; const auto it = v.begin() + 3; RevIt r_it{it}; std::cout << "*it == " << *it <...
Description of Issue std::reverse_iterator is already used in several places in the USD code base. Switching boost::reverse_iterator usage to this reduces the number of dependencies on boost. Steps to Reproduce N/A System Information (OS...
#include <iostream>#include <iterator>#include <vector>intmain(){std::vector<int>v={0,1,2,3,4,5};usingRevIt=std::reverse_iterator<std::vector<int>::iterator>;constautoit=v.begin()+3;RevIt r_it{it};std::cout<<"*it == "<<*it<<'\n'<<"*r_it == "<<*r_it<<'\n'<<...
template< std::indirectly_swappable<Iter> Iter2 > friend constexpr void iter_swap( const reverse_iterator& x, const std::reverse_iterator<Iter2>& y ) noexcept(/*see below*/); (since C++20) Swaps the objects pointed to by two adjusted underlying iterators. The function body is equivalent...
std的find和reverse_iterator联合使用 上代码: //test2013.cpp : 定义控制台应用程序的入口点。//#include"stdafx.h"#include<stdlib.h>#include<stdio.h>#include<iostream>#include<vector>#include#include<string>usingnamespacestd;structCmpByKeyNumber {booloperator()(constint& k1,constint&k2) {returnk1...