Difference between revisions of "cpp/string"
From cppreference.com
< cpp
m (r2.7.3) (Robot: Adding ar, es, fr, it, ja, pt, ru, zh) |
m (Shorten template names. Use {{lc}} where appropriate.) |
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The C++ strings library includes support for two general types of strings: | The C++ strings library includes support for two general types of strings: | ||
| − | * {{ | + | * {{lc|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. | * Null-terminated strings - arrays of characters terminated by a special ''null'' character. | ||
| − | === {{ | + | === {{lc|std::basic_string}} === |
| − | The templated class {{ | + | The templated class {{lc|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 {{ | + | Several specializations of {{lc|std::basic_string}} are provided for commonly-used types: |
| − | {{ | + | {{dsc begin}} |
| − | {{ | + | {{dsc header | string}} |
| − | {{ | + | {{dsc hitem | Type | Definition}} |
| − | {{ | + | {{dsc | {{lc|std::string}} | {{c|std::basic_string<char>}}}} |
| − | {{ | + | {{dsc | {{lc|std::wstring}} | {{c|std::basic_string<wchar_t>}}}} |
| − | {{ | + | {{dsc | {{lc|std::u16string}} | {{c|std::basic_string<char16_t>}} | notes={{mark since c++11}}}} |
| − | {{ | + | {{dsc | {{lc|std::u32string}} | {{c|std::basic_string<char32_t>}} | notes={{mark since c++11}}}} |
| − | {{ | + | {{dsc end}} |
=== Null-terminated strings === | === Null-terminated strings === | ||
| Line 36: | Line 36: | ||
===={{rl| char_traits}}==== | ===={{rl| char_traits}}==== | ||
| − | The string library also provides class template {{rlt|char_traits}} that defines types and functions for {{ | + | The string library also provides class template {{rlt|char_traits}} that defines types and functions for {{lc|std::basic_string}}. The following specializations are defined: |
| − | {{ | + | {{dcl begin}} |
| − | {{ | + | {{dcl header | string}} |
| − | {{ | + | {{dcl | notes=<br><br>{{mark since c++11}}<br>{{mark since c++11}} | |
template<> class char_traits<std::string>; | template<> class char_traits<std::string>; | ||
template<> class char_traits<std::wstring>; | template<> class char_traits<std::wstring>; | ||
| Line 46: | Line 46: | ||
template<> class char_traits<std::u32string>; | template<> class char_traits<std::u32string>; | ||
}} | }} | ||
| − | {{ | + | {{dcl end}} |
[[ar:cpp/string]] | [[ar:cpp/string]] | ||
Revision as of 19:53, 31 May 2013
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:
| Defined in header <string>
|
||
| template<> class char_traits<std::string>; template<> class char_traits<std::wstring>; |
(since C++11) (since C++11) |
|
