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Function std.path.setExtension

Returns a string containing the path given by path, but where the extension has been set to ext.

If the filename already has an extension, it is replaced. If not, the extension is simply appended to the filename. Including a leading dot in ext is optional.

If the extension is empty, this function is equivalent to stripExtension.

This function normally allocates a new string (the possible exception being the case when path is immutable and doesn't already have an extension).

Prototypes

immutable(Unqual!C1)[] setExtension(C1, C2)(
  C1[] path,
  C2[] ext
)
if (isSomeChar!C1 && !is(C1 == immutable) && is(Unqual!C1 == Unqual!C2));

immutable(C1)[] setExtension(C1, C2)(
  immutable(C1)[] path,
  const(C2)[] ext
)
if (isSomeChar!C1 && is(Unqual!C1 == Unqual!C2));

Examples

assert (setExtension("file", "ext")      == "file.ext");
assert (setExtension("file", ".ext")     == "file.ext");
assert (setExtension("file.old", "")     == "file");
assert (setExtension("file.old", "new")  == "file.new");
assert (setExtension("file.old", ".new") == "file.new");

See Also

withExtension which does not allocate and returns a lazy range.

Authors

Lars Tandle Kyllingstad, Walter Bright, Grzegorz Adam Hankiewicz, Thomas Kühne, Andrei Alexandrescu

License

Boost License 1.0

Comments