Difference between revisions of "cpp/string"
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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: | ||
| − | * {{c|std::basic_string}} - a templated class | + | * {{c|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-terminated strings - arrays of characters terminated by a special character called ''null'' charater. |
=== {{c|std::basic_string}} === | === {{c|std::basic_string}} === | ||
| − | The templated class {{c|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 | + | The templated class {{c|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 {{c|std::basic_string}} are provided for commonly-used types: | Several specializations of {{c|std::basic_string}} are provided for commonly-used types: | ||
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=== Null-terminated strings === | === Null-terminated strings === | ||
| − | Null-terminated strings are arrays of characters that are terminated by a special | + | Null-terminated strings are arrays of characters that are terminated by a special character, called ''null'' character. C++ provides functions to create, inspect, and modify null-terminated strings. |
There are three types of null-terminated strings: | There are three types of null-terminated strings: | ||
Revision as of 05:09, 7 August 2012
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 character called null charater.
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 character, called 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:
Template:ddcl list begin <tr class="t-dsc-header">
<td><string>
<td></td> <td></td> </tr> <tr class="t-dcl ">
<td >template<> class char_traits<std::wstring>;
template<> class char_traits<std::u16string>;
<td class="t-dcl-nopad"> </td>
<td >
(since C++11)
(since C++11) </td>
</tr>
Template:ddcl list end
