std::experimental::basic_string_view<CharT,Traits>:: npos
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std::experimental::basic_string_view
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static
constexpr
size_type npos
=
size_type
(
-
1
)
;
|
(库基础技术规范) | |
这是一个特殊值，等于
size_type
类型可表示的最大值。其具体含义取决于上下文，但通常被需要视图索引的函数用作视图结束指示符，或被返回视图索引的函数用作错误指示符。