std::operator<<(std::basic_stacktrace) Defined in header<stacktrace> template<classAllocator> std::ostream&operator<<(std::ostream&os,conststd::basic_stacktrace<Allocator>&st); (since C++23) Inserts the description ofstinto the output streamos. Equivalent toreturnos<<std::to_string(st);. ...
std::atomic_...<std::shared_ptr> std::at_quick_exit std::auto_ptr std::auto_ptr::auto_ptr std::auto_ptr::get std::auto_ptr::operator auto_ptr<Y> std::auto_ptr::operator-> std::auto_ptr::operators std::auto_ptr::release std::auto_ptr::reset std::bad_alloc std::bad_any...
operator <=虽然让多个重复的元素都在set中 AI检测代码解析 #include<iostream>#include<set>using namespace std; class stru{ public: stru(int a, int b): x(a), y(b){} int x; int y; }; bool operator<(const stru& a, const stru& b) //比较的是x的值 { return a.x <= b.x; } ...
bool operator()(dev::eth::Transaction::Ptr _first, dev::eth::Transaction::Ptr _second) const { return _first->importTime() <= _second->importTime(); } }; /// transaction queue, 按照导入时间从小到大排序 using TransactionQueue = std::set<dev::eth::Transaction::Ptr,transactionCompare>;...
std::basic_string<CharT,Traits,Allocator>::get_allocator std::basic_string<CharT,Traits,Allocator>::substr std::basic_string<CharT,Traits,Allocator>::basic_string std::basic_string<CharT,Traits,Allocator>::operator= std::basic_string<CharT,Traits,Allocator>::operator[] std::basic_string<CharT,...
std::complex<T>::real std::literals::complex_literals::operator""i, operator""if, operator""il std::complex<T>::imag std::complex<T>::operator+=,-=,*=,/= std::complex<T>::operator+(unary), operator-(unary) operator+,-,*,/ (std::complex) operator==,!=(std::complex) operato...
std::chrono::duration还定义operator""s,以表示文字秒,但它是算术文字:10.0s和10s是十秒钟,但是"10"s是一根绳子。 例 二次 代码语言:javascript 复制 #include<string>#include<iostream>intmain(){using namespace std::string_literals;std::string s1="abc\0\0def";std::string s2="abc\0\0def"s;...
功能特性测试宏值标准功能特性 __cpp_lib_constexpr_typeinfo 202106L (C++23) std::type_info::operator== 的constexpr 示例运行此代码 #include <iostream> #include <string> #include <typeinfo> #include <utility> class person { public: explicit person(std::string n) : name_(std::move(n)...
namespace std // 命名空间{ class ostream // 类 { public: ostream & operator <<( CString& a1/*强类型语言，类型很重要*/){ // 操作符重载 } }; } // ostream 一般用于输出，结果是屏幕或文件 // ‘<<’ 用于串连输出 例如：out<<a<<b<<c;运算符重载...
std::basic_string<CharT,Traits,Allocator>::operator[] CharT&operator[](size_type pos); (1)(C++20 起为constexpr) constCharT&operator[](size_type pos)const; (2)(C++20 起为constexpr) 在pos<size()时返回到位于指定位置pos的字符的引用,或在pos==size()时: ...