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std::filesystem::path::replace_filename

path& replace_filename( const path& replacement );
 (since C++17)

Replaces a single filename component with replacement.

Equivalent to the following:

remove_filename();
operator/=(replacement);

The behavior is undefined if the path has no filename component (has_filename returns false).

Parameters

(none).

Return value

*this.

Exceptions

(none).

Example

#include <iostream>
#include <filesystem>
namespace fs = std::filesystem;
 
int main()
{
 
    std::cout << fs::path("/foo").replace_filename("bar") << '\n'
              << fs::path("/").replace_filename("bar") << '\n';
}

Output:

"/bar"
"bar"

See also

 replaces the extension
(public member function)
returns the filename path component
(public member function)
removes filename path component
(public member function)
checks if the corresponding path element is not empty
(public member function)

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