David Storrs writes:
> On Sat, Jul 03, 2004 at 01:02:34AM -0600, Luke Palmer wrote:
>
> > But indeed there are cases where it is a problem:
> >
> > my $x = 2;
> > sub mklist () {
> > return map { 2 * $_ } 0..10;
> > }
> >
> > my @list = mklist;
> > say @list[0..4]; # 0 2 4 6 8
> > $x = 1;
> > say @list; # 0 2 4 6 8 5 6 7 8 9 10
> >
> > Which is assuredly different from what would happen if it were evaluated
> > non-lazily.
>
> Did you mean the body of mklist to be:
>
> return map { 2 * $x } 0..10;
> # Note:--------------------^^
Haha, whoops. No, I meant it to be:
return map { $x * $_ } 0..10;
Changes things a bit, then :-)
Luke
