std::experimental::filesystem::path::replace_extension

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Technical specifications
Filesystem library (filesystem TS)
Library fundamentals (library fundamentals TS)
Library fundamentals 2 (library fundamentals TS v2)
Library fundamentals 3 (library fundamentals TS v3)
Extensions for parallelism (parallelism TS)
Extensions for parallelism 2 (parallelism TS v2)
Extensions for concurrency (concurrency TS)
Extensions for concurrency 2 (concurrency TS v2)
Concepts (concepts TS)
Ranges (ranges TS)
Reflection (reflection TS)
Mathematical special functions (special functions TR)
 
 
 
path& replace_extension( const path& replacement = path() );
(1) (filesystem TS)

Replaces the extension with replacement or removes it when the default value of replacement is used.

Firstly, if this path has an extension(), it is removed.

Then, a dot character is appended if replacement is not empty or does not begin with a dot character.

Then replacement is appended to the path.

Parameters

replacement - the extension to replace with

Return value

*this

Exceptions

May throw implementation-defined exceptions.

Example

#include <iostream>
#include <experimental/filesystem>
namespace fs = std::experimental::filesystem;
 
int main()
{
    fs::path p = "/foo/bar.jpeg";
    std::cout << "Was: " << p << '\n';
    p.replace_extension(".jpg");
    std::cout << "Now: " << p << '\n';
}

Output:

Was: "/foo/bar.jpeg"
Now: "/foo/bar.jpg"

See also

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