将boost::asio::streambuf转化为std::string boost::asio::streambuf sbuf;// 一些操作boost::asio::streambuf::const_buffers_type cbt=sbuf_.data();std::stringstrbuf(boost::asio::buffers_begin(cbt),boost::asio::buffers_end(cbt))std::cout<<"发送完成之后的sbuf_:"<<strbuf<<std::endl;...
没有与这些操作数匹配的《运算符操作数类型为：std：：ostream《std：：string 没有与这些操作数匹配的《运算符操作数类型为：std：：ostream《std：：string 错误显⽰：没有与这些操作数匹配的 "<<" 运算符操作数类型为: std::ostream << std::string 错误改正：要在头⽂件中加⼊<string>头函数 ...
错误显示:没有与这些操作数匹配的 "<<" 运算符 操作数类型为: std::ostream << std::string 错误改正:要在头文件中加入<string>头函数
1#include <sstream>2#include <string>3#include <iostream>4usingnamespacestd;56voidmain()7{8ostringstream ostr1;//构造方式19ostringstream ostr2("abc");//构造方式21011/*---12*** 方法str()将缓冲区的内容复制到一个string对象中,并返回13---*/14ostr1 <<"ostr1"<<2012<...
// 创建一个字符串流缓冲区 std::stringbuf buffer; // 创建一个自定义的输出流 MyCustomStream myStream(&buffer); // 使用自定义的输出流 myStream << "Hello, World!"; // 输出到控制台 std::cout << buffer.str() << std::endl; return 0; } 参考链接...
#include<iostream>#include<sstream>std::stringtoString( std::ostream& str ){ std::ostringstream ss; ss << str.rdbuf();returnss.str(); }intmain(){ std::stringstream str; str <<"Hello"; std::string converted =toString( str ); std::cout << converted;return0; } ...
在Qt中QString和std::string转换非常简单， 1、std::string转QString std::string str = "hello ...
undefined reference to `std::__cxx11::basic_string<char, 2019-11-13 09:41 −centos上编译报错,部分信息如下: /usr/local/lib/libprotobuf.so.9: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::al... ...
voidprint(std::ostream&os,std::format_string<Args...>fmt, Args&&...args); (since C++23) Formatsargsaccording to the format stringfmt, and inserts the result intoosstream. If theordinary literal encodingis UTF-8, equivalent to: std::vprint_unicode(os, fmt.get(),std::make_format_args...
Line 2 uses more basic<<statements that have already been defined (in this case, whatever type Msg is, probably a string). Then line 3 returns the stream, again to allow chaining of<<segments. The basic idea is to provideoperator<<functions that build on existingoperator<<function for the...