Dave Storrs writes:
> is a Bad Thing and is going to cause a lot of bugs. I have the following
> problems with it:
>
> for @a; @b -> $x is rw; $y { $x = $y[5] };
>
> 1) This is (AFAIK) the ONLY place in Perl where a semicolon that
> is not enclosed in parens is used for anything other than "end of
> statement" (semi is used to separate parts of a perl5 C-style for loop
> control statement, but that's in parens, so there is an indication that
> the statement isn't over yet).
>
in principle , first ";" can be "labelled" as stream separator since
parser know that for is expecting { closure } ;
the second ";" - is distinguished from ";" statement separator ,
since we know that we are inside sub signature and there have to be a
block . That's how I understand it.
> for @a ~> $x< __ @b ~> $y { $x = $y[5] };
> for @a )~ $x<, $z __ @b )~ $y { $x = $y[5] };
> for @a _ @b __ $x<, $z _ $y { $x = $y[5] };
> for @a _ @b )~ $x<, $z _ $y { $x = $y[5] };
> for @a _ @b ]~ <$x, $z _ $y { $x = $y[5] };
>
> There were actually a bunch of others, but they were even less
> satisfying.
for @a -> $x is rw ;
@b -> $y
{ ... } ;
for @a ; @b ->
$x is rw ; $y
{ ... }
arcadi .
