Boolean expressions (was: Re: [squeak-dev] Re: Object>>#is:?
(was: Re: PackageDependencyTest))
bert at freudenbergs.de
Thu Mar 4 21:23:52 UTC 2010
On 04.03.2010, at 22:21, Stéphane Rollandin wrote:
>> If you have a lot of protocols you can use the super fast
>> primitive supported #pointsTo: and have a lot cleaner (and possibly
>> faster) code:
>> is: aSymbol
>> ^#(Morph MySpecializedMorph FooMorph BarMorph) pointsTo: aSymbol
> wow. thanks for the pointer, I wasn't aware of this one :)
It's also less readable. If you replace #pointsTo: with #includes: I know right away what it means. If you use this low-level optimization I have to think twice which object points where.
- Bert -
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