Function GenericPath.Segment.extension

If the file name contains an extension, this returns a forward range with the extension including the leading dot. Otherwise an empty range is returned.

See also

stripExtension

Example

assert(PosixPath("/foo/bar.txt").head.extension.equal(".txt"));
assert(PosixPath("/foo/bar").head.extension.equal(""));
assert(PosixPath("/foo/.bar").head.extension.equal(""));
assert(PosixPath("/foo/.bar.txt").head.extension.equal(".txt"));