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std::filesystem::hash_value

STD：：文件系统：：散列[医]价值

Defined in header ​​
std::size_t hash_value( const path& p ) noexcept;​(since C++17)

参数

p-a std::filesystem::path object

返回值

一个散列值，如果对于两个路径，p1 == p2然后hash_value(p1) == hash_value(p2)...

例外

noexcept规格：

noexcept

注记

两个路径的相等性是通过分别比较每个组件来确定的，因此，例如"a//b"等号"a/b"也有同样的hash_value...

hash_value起源于刺激。文件系统库，其中它用于与bost.hash%28的互操作性。调用散列[医]价值如果有，%29。

例

另见

comparecompares the lexical representations of two paths lexicographically (public member function)
hash (C++11)hash function object (class template)

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