Strings library

< cpp

The C++ strings library includes support for two general types of strings:

  • std::basic_string - a templated class that encapsulates common string operations
  • Null-terminated strings - arrays of characters terminated by a special token


[edit] std::basic_string

The templated class std::basic_string generalizes how sequences of characters are manipulated and stored. String creation, manipulation, and destruction are all handled by a convenient set of class methods and friend functions.

Several specializations of std::basic_string are provided for commonly-used types:

Defined in header <string>
Type Definition
std::string std::basic_string<char>
std::wstring std::basic_string<wchar_t>
std::u16string std::basic_string<char16_t>
std::u32string std::basic_string<char32_t>

[edit] Null-terminated strings

Null-terminated strings are arrays of characters that are terminated by a special token. C++ provides functions to create, inspect, and modify null-terminated strings.

There are three types of null-terminated strings:

[edit] Additional support

[edit] char_traits

The string library also provides class template char_traits that defines types and functions for std::basic_string. The following specializations are defined:

Defined in header <string>
template<> class char_traits<std::string>;

template<> class char_traits<std::wstring>;
template<> class char_traits<std::u16string>;

template<> class char_traits<std::u32string>;

(since C++11)
(since C++11)