Re: [Pharo-dev] In the quest of a new iterator :)

[Esteban A. Maringolo]

2017-04-19 15:43 GMT-03:00 Stephane Ducasse <stepharo.s...@gmail.com>:
> Hi
>
> I have
>
>  #(#Object #subclass: #Point #instanceVariableNames: 'x y'
> #classVariableNames: '' #package: 'Kernel-BasicObjects') and I would like to
> select on the second elements.
>
> I was thinking that
>
>  #(#Object #subclass: #Point #instanceVariableNames: 'x y'
> #classVariableNames: '' #package: 'Kernel-BasicObjects') selectEvery: [ :i |
> i \\ 2 = 0 ]
> could be a nice iterator.
>
> What do you think?

I think I wouldn't add a new enumerating selector to the core classes.

If it needs to be there, I would replace it by #keysSelect:

So it would work to select based on the keys of the receiver (indexes
for sequenced collections) but also would work as it does for
#keysAndValuesDo: implementors.

Regards,


--
Esteban.