std::filesystem::path::remove_filename
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< cpp | filesystem | path
C++
Feature test macros (C++20)
Concepts library (C++20)
Metaprogramming library (C++11)
Ranges library (C++20)
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
std::filesystem::path
path::remove_filename
(until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)
path& remove_filename();
(since C++17)
Removes a single generic-format filename component (as returned by filename) from the given generic-format path.
After this function completes, has_filename returns false.
[edit] Parameters
(none)
[edit] Return value
*this
[edit] Exceptions
May throw implementation-defined exceptions.
[edit] Example
Run this code
#include <filesystem> #include <iostream> namespace fs = std::filesystem; int main() { fs::path p; std::cout << std::boolalpha << (p = "foo/bar").remove_filename() << '\t' << p.has_filename() << '\n' << (p = "foo/").remove_filename() << '\t' << p.has_filename() << '\n' << (p = "/foo").remove_filename() << '\t' << p.has_filename() << '\n' << (p = "/").remove_filename() << '\t' << p.has_filename() << '\n' << (p = "").remove_filename() << '\t' << p.has_filename() << '\n'; }
Output:
"foo/" false "foo/" false "/" false "/" false "" false