4 Mar
2008
4 Mar
'08
4:56 p.m.
hello,
two bugs:
Collection>#union: and Collection>#collectUnion:
the first pb is where the receiver is a set,
and the second one is that (#(1 2 3) union: #(1 2 3 4))-->#(1 2 3
4), but (#(#(1 2) #(2 3) #(3 4)) collectUnion: [:each])-->#(1 2 2 3
3 4).
I have added some new asserts inside CollectionTest>>#testCollectUnion
(actually there is two red tests in this class) and published a new
version of CodeFooDevelopment.
best wishes,
hani
4 Mar
4 Mar
5:38 p.m.
New subject: bug: Collection>>#union: and Collection>>#collectUnion:
Hi Hani,
Actually, the collectUnion: used to be named flatCollect: and that
described better what it did, because collectUnion: is not intended to
return a set union.
For example, one usage is to combine it with groupedBy:
allNumbers := #(#(1 2) #(2 3) #(3 4)) collectUnion: #yourself.
oddElements := allNumbers groupedBy: #odd.
--> Dictionary (true->#(1 3 3) false->#(2 2 4) )
You can use this to count afterwards the number of occurrences of a
certain pattern.
But, I agree that the name is ambiguous.
Cheers,
Doru
On Mar 4, 2008, at 4:56 PM, Hani ABDEEN wrote:
hello,
two bugs:
Collection>#union: and Collection>#collectUnion:
the first pb is where the receiver is a set,
and the second one is that (#(1 2 3) union: #(1 2 3 4))-->#(1 2 3
4), but (#(#(1 2) #(2 3) #(3 4)) collectUnion: [:each])-->#(1 2 2 3
3 4).
I have added some new asserts inside CollectionTest>>#testCollectUnion
(actually there is two red tests in this class) and published a new
version of CodeFooDevelopment.
best wishes,
hani
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