Optimisation

[Nigel Peck]

Mark Morgan wrote:
> On Mon, Mar 2, 2009 at 9:01 PM, Nigel Peck <nigel.peck at miswebdesign.com> wrote:
>> When the list could be empty, which is faster?
>>
>> if ( @list ) { foreach ( @list ) { } }
>>
>> - or just -
>>
>> foreach ( @list ) { }
>>
>> Or is it a pointless question?
> 
> Sounds like a definite case of premature optimisation.  If it's not
> causing issues for production code, ignore it.  If it is, then there's
> very likely much bigger problems....

I'm just asking because I try to think about optimisation as I'm writing 
code, rather than going back and doing it later, which I've only done in 
rare cases.