Documentation for method
w assembled from the following types:
method w(--> Bool)
True if the invocant is a path that exists and is writable. The method will
X::IO::DoesNotExist if the path points to a non-existent filesystem entity.
TIP: use smartmatch with Pairs to perform multiple file tests.
method w(IO::Special: --> Bool)
The 'write access' file test operator, returns
True if this is the standard output or standard error handle,
False if it is the standard input.
Returns a true value if
:w was passed to the constructor, that is, if the external program is started with its input stream made available to output to the program through the