On Thu, Apr 14, 2011 at 11:27 PM, Peter Scott <pe...@psdt.com> wrote:
> On Thu, 14 Apr 2011 10:47:17 -0700, sono-io wrote:
>
>> On Apr 14, 2011, at 10:15 AM, Uri Guttman wrote:
>>
>>> goto just shouldn't be in your vocabulary. there is no reason for it at
>>> all in any decent language, especially perl.
>>
>> I've been following this thread and I'm just curious. If goto is
> so
>> bad, why did they add it to Perl?
>
> Perl's goto is pretty old. Larry was feeling permissive and in a frame
> of mind to make BASIC programmers happy. He regrets it. The perldoc for
> goto says he has never found a reason to use it.
>
but, sense it is jumping to a different place in the stack, isn't it
more efficient than doing the above mentioned
my $done = 0;
while( !$done ){
$done = 1 if( contition );
do_work;
}
vs
for(;;) {
goto DONE if( contition );
do_work;
}
label DONE;
i'd think the later would be faster not only because you are jumping
to a memory location and because you're not assessing a value every
time.
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