Re: [Pharo-users] what must be instead of the ??

[Roelof Wobben]

hmm. When I try this on P7 |input stepChanges floor| input := '((('. floor := 0. stepChanges := input collect: [ :c |     floor := floor + (c = '(' ifTrue: [ 1 ] ifFalse: [ -1 ]).     floor ]. stepChanges detectIndex: [ :each | each = -1 ] ifNone: [ 'invalid input yo' ]. then I see this error message :  Improper store to indexable object. Roelof Op 9-11-2018 om 17:39 schreef Roelof Wobben: stepChanges := input collect: [ :c | floor := floor + (c = '(' ifTrue: [ 1 ] ifFalse: [ -1 ]). floor ]. stepChanges detectIndex: [ :each | each = -1 ] ifNone: [ 'invalid input yo' ].