Thank you everyone for your answers.

Lou

>Kent Beck refers to the former as "Guard Clause" in his BP book and
>agrees with you about when to use it.
>
>I think it's good to only have returns at the top (guard clauses) or
>bottom.  Not in the middle.
>
>
>On Wed, Oct 23, 2013 at 9:12 AM, Louis LaBrunda
><Lou at keystone-software.com> wrote:
>> Hi,
>>
>> I'm about to write a method where I need to test whether to do something or
>> just get out.  What is the best practices way to do this?  For example:
>>
>> (a = b) ifTrue: [^nil].
>> *The code that does the work*
>>
>> or:
>>
>> (a = b) ifFalse: [
>>    *The code that does the work*
>> ].
>>
>> I think the second is better style but I have used both.  Generally using
>> the first when *The code that does the work* is long and the second when it
>> is short.
>>
>> Is there any speed difference between them?  I doubt it but I thought I
>> would ask anyway.
>>
>> Lou
>> -----------------------------------------------------------
>> Louis LaBrunda
>> Keystone Software Corp.
>> SkypeMe callto://PhotonDemon
>> mailto:Lou at Keystone-Software.com http://www.Keystone-Software.com
>>
>>
>
-----------------------------------------------------------
Louis LaBrunda
Keystone Software Corp.
SkypeMe callto://PhotonDemon
mailto:Lou at Keystone-Software.com http://www.Keystone-Software.com