On 10/10/05, Austin Hastings <[EMAIL PROTECTED]> wrote:
> What about whitespace?
>
> foo (a => 42); # Note space
>
> Is that the first case (subcall with named arg) or the second case (sub
> with positional pair)?
Sub with positional pair, since the parens aren't call-parens (because
of the space), so they protect the pair. It would probably be prudent
to emit a warning in this case, for obvious reasons. (Actually, this
is one of the major problems with using parens to protect pair args.)
> What's the most complete way to get the sub's arguments?
>
> That is, for a sub that takes positional, optional, named, and variadic
> (*) arguments, what's the best mechanism for grabbing the entire call?
As far as I know there currently *isn't* a concise way to
capture/forward all (or some) of a sub's arguments; the closest thing
is:
sub foo([EMAIL PROTECTED], *%named) { bar([EMAIL PROTECTED], *%named) }
Which is ugly and unwieldy. I believe Luke was considering some kind
of 'unified arg-list object' which you could use to slurp and splat
entire argument lists, like so:
sub foo(*$args) { bar(*$args) }
But I don't think it's been posted to the list yet.
Stuart
