basic_string&erase(size_type index=0, size_type count=npos); (C++20 前) constexprbasic_string&erase(size_type index=0, size_type count=npos); (C++20 起) (2) iterator erase(iterator position); (C++11 前) iterator e
erase_if( std::basic_string<CharT, Traits, Alloc>& c, Pred pred ); (2) (since C++20) 1) Erases all elements that compare equal to value from the container. Equivalent to auto it = std::remove(c.begin(), c.end(), value); auto r = c.end() - it; c.erase(it, c.end(...
AI代码解释 intmain(){//不给第二个参数默认将后面的全部删除strings1("QQQQQQQQQQQ");s1.erase(2);cout<<s1<<endl;//删除中间的部分strings2("hello world hello earth");s2.erase(5,6);cout<<s2<<endl;//实现头删strings3("hello world hello earth");s3.erase(0,1);cout<<s3<<endl;//同...
上文已经介绍了+=,append,push_back,pop_back,这里介绍assign,insert,erase,replace。 1.1 assign的使用 assign的使用类似于赋值,会完全覆盖原来的字符串,进行赋值: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 int main() { string s1("Hello world"); s1.assign("xx"); cout << s1; return 0...
__cpp_lib_constexpr_string201907L(C++20)Constexpr forstd::basic_string __cpp_lib_char8_t201907L(C++20)std::u8string __cpp_lib_erase_if202002L(C++20)erase,erase_if __cpp_lib_string_contains202011L(C++23)contains __cpp_lib_string_resize_and_overwrite202110L(C++23)resize_and_overwrite...
1.cpp reference string说明 2.cpp reference string头文件 字符串对象的初始化 //practice string class #include<iostream> #include<string> intmain() { std::stringhw ="Hello World";//初始化字符串 std::stringname("zhangsan"); std::stringcity{"Beijing"}; ...
basic_string::erase basic_string::push_back basic_string::pop_back (DR*) basic_string::append basic_string::append_range (C++23) basic_string::operator+= basic_string::replace basic_string::replace_with_range (C++23) basic_string::copy basic_string::resize basic_string::resize_and_overwri...
std::string str("Please, erase trailing white-spaces \n"); std::string whitespaces(" \t\f\v\n\r"); std::size_t found = str.find_last_not_of(whitespaces); if (found != std::string::npos) str.erase(found + 1); else
erase(0, pos + 3); cout << url << endl; } // 利用reserve提高插入数据的效率,避免增容带来的开销 //=== void TestPushBack() { string s; size_t sz = s.capacity(); cout << "making s grow:\n"; for (int i = 0; i < 100; ++i) { s += 'c'; if (sz != s.capacity()...
算法(Algorithms):各种常用算法,提供了执行各种操作的方式,包括对容器内容执行初始化、排序、搜索和转换等操作,比如 sort、search、copy、erase。从实现的角度来看,STL 算法是一种函数模板。 迭代器(Iterators):迭代器用于遍历对象集合的元素,扮演容器与算法之间的胶合剂,是所谓的“泛型指针”,共有 5 种类型,以及其...