On Tue, Feb 05, 2008 at 05:42:28PM -0500, Mark J. Reed wrote:
: On Feb 5, 2008 5:34 PM, Darren Duncan <[EMAIL PROTECTED]> wrote:
: > >+ my $a = 0; my @b;
: > >+ ($a, @b[$a]) = 1, 2;
: > >+
: > >+assigns 2 to @b[0], not @b[1].
: >
: > Personally, I think this is a particularly welcome change.
:
: It is certainly less surprising, I'd say. But is there a LET*
: analogue to do it the old way if we want to?
I don't think so, at least not without writing a macro. The only
think like it would be the fact that signatures bind right to left, so
defaults can refer to previous parameters. But a signature doesn't
allow you to declare a slice of an existing array.
Possibly you could write something like:
(lazy { $a }, lazy { @b[$a] }) = 1,2;
and get away with it someday. But pugs doesn't currently allow you
to lazily return an lvalue, it seems...
Oh wait, I lied. You can get pugs to do it with:
my $a = 0; my @b; (lazy { VAR($a) }, lazy { VAR(@b[$a]) }) = 1,2; say
@b.join(':')
Now just put that in a macro...
Larry
