[NIT] Pretty pretting #ifFalse:ifTrue:
Stephan Rudlof
sr at evolgo.de
Mon Nov 19 19:33:37 UTC 2001
My finger has been too fast:
I wrote:
>
> 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.
instead of nil in the false case.
>
> 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
--
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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