[Pharo-users] is this a valid Smalltalk way

Hello, Im thinking how to solve this one : https://github.com/exercism/problem-specifications/blob/master/exercises/bow... so I thought because you throw two times for a frame to solve it like this : aCollection withIndexDo: [:index :item |    (if spare) ifTrue: take 3 items out of the score collection and sum them up    (if strike) ifTrue: take 4 items out of the score collection and sum them up.    (if not a spare and not a strike) : ifTrue:  take 2 items out of the score collection and sum them up.    index := index + 2  // because  a frame is always two times a throw Now I wonder if this is a valid smalltalk to do this Roelof