1)若index>size()则为std::out_of_range。 2-3)(无) 任何情况下,若因任何原因抛出异常,则此函数无效果(强异常保证)。(C++11 起) 示例 运行此代码 #include <iostream>#include <algorithm>#include <string>intmain(){std::strings="This is an example";std:
std::stringto_string(doublevalue); (8)(since C++11) std::stringto_string(longdoublevalue); (9)(since C++11) Converts a numeric value tostd::string. Letbufbe an internal to the conversion functions buffer, sufficiently large to contain the result of conversion. ...
std::stringto_string(doublevalue); (8)(since C++11) std::stringto_string(longdoublevalue); (9)(since C++11) Converts a numeric value tostd::string. Letbufbe an internal to the conversion functions buffer, sufficiently large to contain the result of conversion. ...
basic_string::substr Constants basic_string::npos Non-member functions operator+ swap(std::basic_string) erase(std::basic_string)erase_if(std::basic_string) (C++20)(C++20) I/O operator<<operator>> getline Comparison operator==operator!=operator<operator>operator<=operator>=operator<=> (until...
Original: The class template basic_stringstream implements input/output operations on memory (std::basic_string) based streams. It essentially wraps a raw string device implementation (basic_stringbuf) into a higher-level interface (basic_iostream). The complete interface to unique basic_stringbuf me...
basic_string_view(C++17) Text processing library Primitive numeric conversions(C++17) Formatting(C++20)−Localization text_encoding(C++26) Regular expressions(C++11) basic_regex−Algorithms Default regular expression grammar Null-terminated sequence utilities: ...
std::stringstd::basic_string<char> std::wstringstd::basic_string<wchar_t> std::u16stringstd::basic_string<char16_t> std::u32stringstd::basic_string<char32_t> Null-terminierte Strings Null-terminierte Strings sind Arrays von Zeichen, die durch ein speziellesnullZeichen abgeschlossen werden....
The class template std::basic_stringstream implements input and output operations on string based streams. It effectively stores an instance of std::basic_string and performs the input and output operations on it. At the low level, the class essentially wraps a raw string device implementation ...
char* strncpy( char* dest, const char* src, std::size_t count ); Copies at most count characters of the byte string pointed to by src (including the terminating null character) to character array pointed to by dest. If count is reached before the entire string src was copied, the ...
std::stringto_string(doublevalue); (8)(since C++11) std::stringto_string(longdoublevalue); (9)(since C++11) Converts a numeric value tostd::string. Letbufbe an internal to the conversion functions buffer, sufficiently large to contain the result of conversion. ...