std::experimental::basic_string_view<CharT,Traits>:: remove_prefix
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basic string view
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std::experimental::basic_string_view
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constexpr
void
remove_prefix
(
size_type n
)
;
|
(库基础技术规范) | |
将视图起始位置向前移动
n
个字符。
如果 n > size ( ) ,则行为未定义。
目录 |
参数
| n | - | 要从视图起始位置移除的字符数量 |
返回值
(无)
复杂度
常量。
示例
运行此代码
#include <iostream> #include <experimental/string_view> int main() { std::string str = " trim me"; std::experimental::string_view v = str; v.remove_prefix(std::min(v.find_first_not_of(" "), v.size())); std::cout << "String: '" << str << "'\n" << "View : '" << v << "'\n"; }
输出:
String: ' trim me' View : 'trim me'
参见
|
通过向后移动末尾位置来缩小视图
(公开成员函数) |