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Strings library

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Revision as of 12:16, 2 November 2012 by P12bot (Talk | contribs)

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

  • std::basic_string - a templated class designed to manipulate strings of any character type.
  • Null-terminated strings - arrays of characters terminated by a special null character.

Contents

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 related 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>

Null-terminated strings

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

There are three types of null-terminated strings:

Additional support

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:

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<td>
Defined in header <string>
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<td></td> <td></td> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

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<td >
template<> class char_traits<std::string>;

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

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

<td class="t-dcl-nopad"> </td> <td >

(since C++11)
(since C++11) </td> </tr> Template:ddcl list end