[NIT] Pretty pretting #ifFalse:ifTrue:
Stephan Rudlof
sr at evolgo.de
Mon Nov 19 19:18:58 UTC 2001
Bijan Parsia wrote:
>
<snipped>
> Take this example:
>
> testPPIf
> true ifTrue:[5]
> ifFalse:[nil] "Nothing now, but I may want to add
> something later."
>
> Ok, hardly wonderful style, but not *insane* either :)
>
> Pretty printed:
>
> testPPIf
> true
> ifTrue: [5]
>
> Uhm....
>
> Now *that's* crazy!
>
> Granted, it's semantically equivalent, but so?
>
> testPPIf: aBool
> ^aBool ifTrue:[5]
> ifFalse:[nil]
>
> seems semantically equivalent to:
>
> testPPIf: aBool
> ^ aBool
> ifTrue: [5]
>
> But so is:
>
> testPPIf: aBool
> aBool ifTrue:[^5]
> ifFalse:[^nil]
>
> (ok, perhaps only in this simple example).
>
> And in that case PPing gets:
>
> testPPIf: aBool
> aBool
> ifTrue: [^ 5]
> ifFalse: [^ nil]
Fully correct!
*Wrong* would be
testPPIf: aBool
aBool
ifTrue: [^ 5]
, since this would return self.
Greetings,
Stephan
>
> <sigh/> It adds a bit of magic to the system that's kind of worrisome
> (espeically the killing of comments).
>
> Cheers,
> Bijan Parsia.
--
Stephan Rudlof (sr at evolgo.de)
"Genius doesn't work on an assembly line basis.
You can't simply say, 'Today I will be brilliant.'"
-- Kirk, "The Ultimate Computer", stardate 4731.3
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