std::basic_string::basic_string
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< cpp | string | basic string
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explicit basic_string( const Allocator& alloc = Allocator() ); |
(1) | |
basic_string( size_type count, CharT ch, |
(2) | |
basic_string( const basic_string& other, size_type pos, |
(3) | |
basic_string( const CharT* s, size_type count, |
(4) | |
basic_string( const CharT* s, const Allocator& alloc = Allocator() ); |
(5) | |
template< class InputIt > basic_string( InputIt first, InputIt last, |
(6) | |
basic_string( const basic_string& other ); |
(7) | |
basic_string( const basic_string& other, const Allocator& alloc ); |
(7) | (C++11 起) |
basic_string( basic_string&& other ) |
(8) | (C++11 起) |
basic_string( basic_string&& other, const Allocator& alloc ); |
(8) | (C++11 起) |
basic_string( std::initializer_list<CharT> init, const Allocator& alloc = Allocator() ); |
(9) | (C++11 起) |
从各种数据源和构造新的字符串,可以使用用户提供的分配器
1) alloc
.原文:
Constructs new string from a variety of data sources and optionally using user supplied allocator
alloc
.默认构造函数。构造空字符串.
2) 原文:
Default constructor. Constructs empty string.
构造的字符串与字符
3) count
ch
副本.原文:
Constructs the string with
count
copies of character ch
.构造字符串的一个子串
4) [pos, pos+count)
other
。如果所请求的子持续过去的结尾的字符串,或者如果count == npos,所得到的子字符串是[pos, size())
。如果pos >= other.size(),std::out_of_range被抛出.原文:
Constructs the string with a substring
[pos, pos+count)
of other
. If the requested substring lasts past the end of the string, or if count == npos, the resulting substring is [pos, size())
. If pos >= other.size(), std::out_of_range is thrown.count
的第一个字符的字符串所指向的s
构造的字符串。 s
可以包含空字符。 s
不能是NULL指针.原文:
Constructs the string with the first
count
characters of character string pointed to by s
. s
can contain null characters. s
must not be a NULL pointer.构造的字符串以NULL结尾的字符串的内容所指向的
s
。字符串的长度是由第一个空字符。 s
不能是NULL指针.原文:
Constructs the string with the contents of null-terminated character string pointed to by
s
. The length of the string is determined by the first null character. s
must not be a NULL pointer.6) Constructs the string with the contents of the range [first, last)
.
7) Copy constructor. Constructs the string with the copy of the contents of other
.
8) Move constructor. Constructs the string with the contents of other
using move semantics.
9) Constructs the string with the contents of the initializer list init
.
目录 |
[编辑] 参数
alloc | - | 使用该字符串的所有内存分配的分配器
原文: allocator to use for all memory allocations of this string |
count | - | 结果字符串的大小
|
ch | - | 初始化字符串的值
|
first, last | - | 范围内复制的字符
|
s | - | 作为源use
初始化字符串的一个字符串的指针 原文: pointer to a character string to use as source to initialize the string with |
other | - | 另一个字符串作为源使用初始化字符串
原文: another string to use as source to initialize the string with |
init | - | 初始化列表中初始化字符串
原文: initializer list to initialize the string with |
类型要求 | ||
-InputIt 必须满足 InputIterator 的要求。
|
[编辑] 复杂度
1)不变
2-4) 线性
count
5) linear in length of s
first
和last
之间的距离呈线性关系原文:
linear in distance between
first
and last
线性大小
8) other
不变。如果
9) alloc
,并给出alloc != other.get_allocator(),则采用线性.原文:
constant. If
alloc
is given and alloc != other.get_allocator(), then linear.线性大小
init
[编辑] 示例
本章尚未完成 原因:暂无示例 |
[编辑] 另请参阅
为字符串赋值 (公共成员函数) | |
为字符串赋值 (公共成员函数) |