Are the final #asArray conversions always needed ? If not, it would be more efficient not to do them every time, no ?
On 14 Mar 2014, at 22:19, Pharo4Stef <pharo4s...@free.fr> wrote: > something like that > > diffs: aCollection > "Answer the set theoretic differences of two collections. The first > element of the result is the difference from the perspective of the receiver > and the second element the difference from the perspective of the argument." > > "#(a b c d e f) diffs: #(a b z k) #(#a #b #c #d #e #f) > { #(#f #d #e #c) . #(#k #z)} > " > "{ self difference: aCollection . aCollection difference: self }" > > | receiver another | > receiver := self asSet. > another := aCollection asSet. > self do: [ :each | > (another includes: each) > ifTrue: [ receiver remove: each. > another > remove: each ]]. > ^ { receiver asArray . another asArray} >