noexcept 说明: noexcept(std::allocator_traits<Allocator>::propagate_on_container_swap::value || std::allocator_traits<Allocator>::is_always_equal::value) (C++17 起)复杂度常数。 示例运行此代码 #include <iostream> #include <vector> template<class Os, class Co> Os& operator<<(Os& os, con...
voidswap(std::vector<T, Alloc>&lhs, std::vector<T, Alloc>&rhs); (until C++17) template<classT,classAlloc> voidswap(std::vector<T, Alloc>&lhs, std::vector<T, Alloc>&rhs) noexcept(/* see below */); (since C++17) (constexpr since C++20) ...
vector::clear vector::insert vector::emplace (C++11) vector::insert_range (C++23) vector::erase vector::push_back vector::emplace_back (C++11) vector::append_range (C++23) vector::pop_back vector::resize vector::swap operator==operator!=operator<operator>operator<=operator>=operator<=> ...
为std::vector 特化std::swap 算法。交换 lhs 与rhs 的内容。调用 lhs.swap(rhs)。 参数lhs, rhs - 要交换内容的容器 返回值(无) 复杂度常数。 异常noexcept 说明: noexcept(noexcept(lhs.swap(rhs))) (C++17 起)注解尽管std::swap 对容器适配器的重载是在 C++11 引入的, C++98 中已能用 std::...
swap,std::swapend() clear,operator=,assignAlways. reserve,shrink_to_fitIf the vector changed capacity, all of them. If not, none. eraseErased elements and all elements after them (includingend()). push_back,emplace_backIf the vector changed capacity, all of them. If not, onlyend(). ...
Swap−Type operations(C++11) Integer comparison(C++20) pair−tuple(C++11) optional(C++17) expected(C++23) variant(C++17)−any(C++17) bitset−Bit manipulation(C++20) Containers library vector−deque−array(C++11) list−forward_list(C++11) ...
cppreference 涵盖了 C++ 语言的多个方面,包括容器库、IO 操作、算法库、类特性、范围 for 循环、lambda 表达式、正则表达式库、智能指针、通用工具函数等。以下是一些主要内容的详细介绍: 容器库 cppreference 详细介绍了 C++ 中的各种容器,如 vector、set、map、deque、priority_queue、unorde...
vector <int> vec;for(...) vec.push_back(...);for(autoit: vec) {...} #lambda 表达式 推荐找点实例来看,在一定程度上能简化代码。注意效率可能较低 示例: sort(a, a + n, [] (intp,intq) {returnp > q; }); queue <int> que;autodoPush = [&] (intff) { ...
template <class T> void swap(T &i, T &j) { T temp = i; i = j; j = temp; } swap(a, b); 6.2. Class Templates See the example SimpleVector class. 7. File Operations Data TypeDescription ifstream Input file stream. Can be used to read data from files. ofstream Output file str...
// into a vector of RefRecords. The input streams are reset once // it's done. writeU<int32_t>(fout3, 1, bigEndian); // endianness sentinel bool color = parms.color; if(color) { parms.color = false; // Make sure the .3.gEbwt_ext and .4.gEbwt_ext files contain // nucle...