std::vector::assign std::vector::assign void assign( size_type count, const T& value ); (1) template< class InputIt > void assign( InputIt first, InputIt last ); (2) void assign( std::initializer_list<T> ilist ); (3) (since C++11) 替换容器的内容。 1%29将内容替换...
std::vector中assign resize reserve的区别 1.assign 用于初始化 2.resize 改变capacity,与size 3.reserve 改变capacity,不改变size 超过size的capacity不可直接访问,可通过push_back追加,若size < capacity, push_back操作不尽心内存分配。 测试代码: #include <stdio.h>#include<iostream>#include<vector>#include<...
std::vector中assign resize reserve的区别 1.assign 用于初始化 2.resize 改变capacity,与size 3.reserve 改变capacity,不改变size 超过size的capacity不可直接访问,可通过push_back追加,若size < capacity, push_back操作不尽心内存分配。 测试代码: #include <stdio.h>#include<iostream>#include<vector>#include<...
//vector::operator[]#include <iostream>#include<vector>intmain () { std::vector<int> myvector (10);//10 zero-initialized elementsstd::vector<int>::size_type sz =myvector.size();//assign some values:for(unsigned i =0; i < sz; i++) myvector[i] =i;//reverse vector using operat...
下列代码用 assign 添加数个字符到 std::vector<char> :运行此代码 #include <vector> #include <iostream> int main() { std::vector<char> characters; characters.assign(5, 'a'); for (char c : characters) { std::cout << c << ' '; } characters.assign({'\n', 'C', '+', '+', ...
问使用std:: vector :: Assign ()将一部分向量赋值给自己EN如果要重置向量以包含子范围，则可以将这些...
assignVector.assign(10,1); 结果: 1 1 1 1 1 1 1 1 1 1 3.1.2 使用其他std::vector的迭代器为std::vector分配值 std::vector<int> myVector{1,2,3,4,5}; std::vector<int> assignVector; assignVector.assign(myVector.begin(), myVector.end()); ...
std::vector< char > c; c.assign(5,'a');//此时c = {'a','a','a','a','a'} const std::string str(6,'b'); c.assign(str.begin(), str.end());//此时c = {'b','b','b','b','b','b'} c.assign({'C','+','+','1','1'});//此时c = {'C','+','+','...
std::vector<T,Allocator>::assign voidassign(size_type count,constT&value); (1) template<classInputIt> voidassign(InputIt first, InputIt last); (2) voidassign(std::initializer_list<T>ilist); (3)(since C++11) Replaces the contents of the container. ...
std::inplace_vector<T,N>::assign constexprvoidassign(size_type count,constT&value); (1)(C++26 起) template<classInputIt> constexprvoidassign(InputIt first, InputIt last); (2)(C++26 起) constexprvoidassign(std::initializer_list<T>ilist); ...