I note false polymorphism with Integer>>take:
of course both are related, since Integer>>take: (11 take: 4) tells how
many different ways you can #take: 4 elements from a Set of size 11...

Le jeu. 9 mai 2019 à 15:27, <commits at source.squeak.org> a écrit :

> A new version of Collections was added to project The Inbox:
> http://source.squeak.org/inbox/Collections-mt.832.mcz
>
> ==================== Summary ====================
>
> Name: Collections-mt.832
> Author: mt
> Time: 9 May 2019, 3:27:06.069782 pm
> UUID: b3c087f4-c2bc-d542-91d7-9c214ae3a97f
> Ancestors: Collections-nice.831
>
> Adds #take: to create a sub-collection from any collection by specifying
> the number of elements. Works like #first: for sequenceable collections but
> does not fail if collection is too small.
>
> =============== Diff against Collections-nice.831 ===============
>
> Item was added:
> + ----- Method: CharacterSet>>take: (in category 'accessing') -----
> + take: n
> +
> +       self shouldNotImplement.!
>
Why? a simple do: loop seems feasible.


> Item was added:
> + ----- Method: Collection>>take: (in category 'accessing') -----
> + take: n
> +       "Enumerate this collection and return the first n elements or
> less."
> +
> +       | index result |
> +       index := 1.
> +       result := self species new: (n min: self size).
> +       self associationsDo: [:each |
> +               result add: each.
> +               (index := index + 1) > n ifTrue: [^ result]].
>
+       ^ result!
>
First reaction: I did not understand associationsDo:... Why not just do:?
After verification: I see that default Behavior of associationsDo: is to
do: and this avoids a redefinition of take: in Dictionary...
I don't find it unsurprising, but if it works...


> Item was added:
> + ----- Method: SequenceableCollection>>take: (in category 'accessing')
> -----
> + take: n
> +
> +       ^ self first: (n min: self size)!
>
> Item was added:
> + ----- Method: Stream>>take: (in category 'accessing') -----
> + take: n
> +
> +       ^ self next: n!
>
>
>
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