Documentation for method printf, assembled from the following types:
method printf(IO::Handle: Cool , *)
Formats a string based on the given format and arguments and
Attempting to call this method when the handle is in binary mode will result in
X::IO::BinaryMode exception being thrown.
my = open 'path/to/file', :w;.printf: "The value is %d\n", 32;.close;
multi method printf(|)