On Tue, 2005-05-10 at 15:52, Joshua Gatcomb wrote:
> I am wondering what the proper behavior of binding to a sub's return
> value should be
>
> sub some_routine {
> my $foo = 42;
> return $foo;
> }
> my $rv := some_routine();
>
> Should $rv be bound to $foo or to a copy of $foo? I ask because with
> state() and closures, it makes a difference since the value can
> change.
Yes, so let's pose an easy, full example with a result we can point at:
my $x = 1;
my $y := (->{$x}).();
$x++;
say $y;
Ok, so clearly that prints 1 or 2 (the first person to say it's a
junction gets the mean look ;)
Some questions I'd add to yours:
* We discussed auto-closurizing := statements before, so when does
that happen vs. performing the operation and taking the value
exactly?
* If the above prints 2, then how do you return a value that is a
constant "safely"? Do you need to explicitly invoke a cloning
operation on it?
* How can I talk you out of it? ;-)
--
Aaron Sherman <[EMAIL PROTECTED]>
Senior Systems Engineer and Toolsmith
"It's the sound of a satellite saying, 'get me down!'" -Shriekback
