> (We initially used a "goto FINISH", but I hated that, too. You can
use a "break" if you're in a loop.)
you can also just surround the code in {} to make it a block and then use
"last;"
in perldoc -f last
Note that a block by itself is semantically identical to a loop
that executes once. Thus "last" can be used to effect an early
exit out of such a block.
What version of perl/platform are you using?
Kind regards,
Mark Anderson
Team Leader - RSWI
1st Floor, The Broadstone
50 South Gyle Crescent
Edinburgh, EH12 9UX
Tel: 0131 523 7630
Mob: 07808 826 063
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [SMTP:[EMAIL PROTECTED]
> Sent: Wednesday, July 13, 2005 2:55 PM
> To: [email protected]
> Subject: Re: Change in "goto" behavior
>
> *** WARNING : This message originates from the Internet ***
>
> At 08:30 AM 7/13/2005, Hugh Loebner wrote:
>
>
> Why on earth are you using a goto statement? They are pernicious.
>
>
> We have a goto in our code. I hate it, but there just isn't a good
> "switch" or "case" statement in Perl yet (I think I've heard that it's
> planned), and the following just isn't efficient enough for us:
>
> if ($op = 'thisop') {
> }
> elsif ($op = 'thatop') {
> }
> ...
>
> There are hundreds of possible values for $op. Anyway, I don't know how
> many people are aware of it, but the destination of a "goto" can be a
> variable, e.g.
>
> goto $op;
>
> thisop:
> do_this();
> thatop:
> do_that();
>
> Of course, you then have to prevent the fall through from the code for
> thisop: to the code for thatop:, but that's another matter. (We initially
> used a "goto FINISH", but I hated that, too. You can use a "break" if
> you're in a loop.) We use a method that I really don't have time to
> describe now, but doesn't use a "goto". I hate goto's, but for the example
> above, it's efficient and much clearer than e.g. setting up a hash of op
> names and code to handle each op.
>
>
>
> On 7/12/05, Dave Ressler <[EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>> wrote:
>
>
> I have noticed a change in behavior in "goto" statements
> recently. Whereas a statement like "goto PLACE;" would work fine no matter
> where "PLACE:" was in my code, I've noticed that scripts that used to work
> are now failing at the "goto" statement.
>
>
>
> I can probably work out an example if needed, but the
> general question is: have any restrictions been put on "goto" recently?
> What are the real criteria needed to be satisfied for the destination to
> be successfully found?
>
>
>
> Thanks,
>
> Dave
>
>
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