W3cubDocs

/C++

operator==,!=,<,<=,>,>=(std::filesystem::path)

bool operator==( const path& lhs, const path& rhs ) noexcept;
 (1) (since C++17) 
bool operator!=( const path& lhs, const path& rhs ) noexcept;
 (2) (since C++17) 
bool operator<( const path& lhs, const path& rhs ) noexcept;
 (3) (since C++17) 
bool operator<=( const path& lhs, const path& rhs ) noexcept;
 (4) (since C++17) 
bool operator>( const path& lhs, const path& rhs ) noexcept;
 (5) (since C++17) 
bool operator>=( const path& lhs, const path& rhs ) noexcept;
 (6) (since C++17)

Compares two paths lexicographically.

1) Checks whether lhs and rhs are equal. Equivalent to !(lhs < rhs) && !(rhs < lhs).
2) Checks whether lhs and rhs are not equal. Equivalent to !(lhs == rhs).
3) Checks whether lhs is less than rhs. Equivalent to lhs.compare(rhs) < 0.
4) Checks whether lhs is less than or equal to rhs. Equivalent to !(rhs < lhs).
5) Checks whether lhs is greater than rhs. Equivalent to rhs < lhs.
6) Checks whether lhs is greater than or equal to rhs. Equivalent to !(lhs < rhs).

Parameters

lhs, rhs - the paths to compare

Return value

true if the corresponding comparison yields, false otherwise.

Notes

Path equality and equivalence have different semantics.

In the case of equality, as determined by operator==, only lexical representations are compared. Therefore, path("a") == path("b") is never true.

In the case of equivalence, as determined by equivalent(), it is checked whether two paths resolve to the same file system object. Thus equivalent("a", "b") will return true if the paths resolve to the same file.

See also

compares the lexical representations of two paths lexicographically
(public member function)

© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/filesystem/path/operator_cmp