Re: [Libguestfs] IRC question about ?foo etc
Hi Richard,
Thanks for taking the time to provide such interesting explanations!
Very interesting reading in the morning ;)
--
Cedric
On Sun, 2017-01-08 at 23:21 +0000, Richard W.M. Jones wrote:
On Sun, Jan 08, 2017 at 11:13:42PM +0000, Richard W.M. Jones wrote:
> let other_func ~foo ~bar ?baz =
> func ~foo ~bar ?baz
Actually there is a third issue which is what makes this even
more confusing.
?baz (when calling a function) expects that baz (the binding) is an
option, and passes either nothing (if baz = None) or the optional
argument (if baz <> None). In effect it means pass baz directly to
the function, since the function implementation is expecting an option
type for this parameter.
Rich.