[GemStone-Smalltalk] first: / last:

[Karsten Kusche via GemStone-Smalltalk]

Hi Richard,  

just some additional info about API: besides #first: and #last: there’s also #allButFirst: and #allButLast:, which make it extremely easy to access sub-collections without using copyFrom:to:.  

I do however agree that a „copy“ at the beginning of the selectors wouldn’t have hurt.

Kind Regards
Karsten

--  
Karsten Kusche - Dipl. Inf. (FH) - karsten at heeg.de (mailto:karsten at heeg.de)
Georg Heeg eK - Köthen
Handelsregister: Amtsgericht Dortmund A 12812  


Am Donnerstag, 18. September 2014 um 17:58 schrieb Richard Sargent via GemStone-Smalltalk:

> Gemstone/S mailing list wrote
> > The implementation of #first: and #last: in GemStone is very different
> > from VW, Pharo and VA.  
> >  
> > On GS the methods set the first or last value, in other dialects they
> > answer a copy with the first or last indexed values.  
> >  
> > ...
> >  
> > Any plans for this to change?  
>  
> In general, no. We try to avoid breaking applications that are working for
> our customers by avoiding changes in APIs.
>  
> Personally, I would like to change things to make GemStone more compatible
> with other dialects, but as indicated, there are cases where we would create
> problems we don't want.
>  
> I have issues with the concepts behind #first, #first:, #last, and #last:,
> especially when compared to other API methods. In some respects, the
> GemStone implementation is more consistent. I think #copyFrist: and
> #copyLast: would be better and more accurate names for the functions and
> would avoid the semantic imprecision associated with #first: and #last:.
>  
> Richard
>  
>  
>  
>  
> --
> View this message in context: http://forum.world.st/first-last-tp4778749p4778800.html
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