经不住广大群众的吐槽,C++20标准终于推出了标准库的字符串格式化函数std::format,该函数既支持std::string也支持宽字符std::wstring的格式化。 函数原型 template<class... Args> std::string format(std::string_view fmt, const Args&... args); template<class... Args> std::wstring format(std::wstring...
"<<u8str.size()<<" 个字节:\n";hex_print(u8str);// 宽到 UTF-16lestd::wstring_convert<std::codecvt_utf16<wchar_t,0x10ffff,std::little_endian>>conv2;std::stringu16str=conv2.to_bytes(wstr);std::cout<<"UTF-16le 转换产生了 "<<u16str.size()<<" 个字节:\n";hex_print(u16...
#include <iostream> #include <clocale> #include <string> #include <cwchar> void print_wide(const std::wstring& wstr) { std::mbstate_t state {}; for(wchar_t wc : wstr) { std::string mb(MB_CUR_MAX, '\0'); std::size_t ret = std::wcrtomb(&mb[0], wc, &state); std::...
1. When should I use std::wstring over std::string? If the programming platform or API function is a single-byte one, and we want to process or parse some Unicode data, e.g read from Windows'.REG file or network 2-byte stream, we should declare std::wstring variable to easily proce...
string to wstringinline std::wstring to_wide_string(const std::string& input){std::wstring_...
std::wstring_convert std::iscntrl(std::locale) std::isupper(std::locale) std::islower(std::locale) std::isalpha(std::locale) std::isdigit(std::locale) std::ispunct(std::locale) std::isxdigit(std::locale) std::isalnum(std::locale) std::isprint(std::locale) std::isgraph(std::locale...
wstring result = pwchar; return result; } 2》wstring转string string ws2s(const wstring& ws) { _bstr_t t = ws.c_str(); char* pchar = (char*)t; string result = pchar; return result; } 3》string转cstring a)CString.format("%s", string.c_str()); ...
std::wstring Convert2WString (int From) { wchar_t buffer[20]; _itow_s (From, buffer, sizeof (buffer) / sizeof (wchar_t), 10); return std::wstring (buffer); } You will need perhaps add a little error-handling. Also, you will need to fix GetVariable to accept a std::wstring ...
...(L"Node name:%s\n", ssName); // 这里的L不能省略 SysFreeString(ssName); 将CComBSTR类字符串的内容复制到wstring中,然后使用wcout...类字符串强转为LPCTSTR类型后,然后使用wcout输出 对CStringW类字符串而言,这已经是一种比较简单的方式了。...CW2A类字符串(多字节字符串)中,然后使用wcout输...
特化vs. 泛型:可以将std::string_view看作是std::basic_string_view的一个具体实现,专门用于处理char类型的字符串。如果你需要处理宽字符或其他类型的字符,你可能会使用std::basic_string_view的其他特化,例如std::wstring_view(等价于std::basic_string_view<wchar_t>)。