Hi Peter,
On Fri, 9 Nov 2018 at 19:00, Alistair Grant <akgrant0...@gmail.com> wrote:
>
> Hi Peter,
>
> On Fri, 9 Nov 2018 at 18:51, Peter Uhnak <i.uh...@gmail.com> wrote:
> >>
> >> but how do I find now the answer do I have to do something like puzzle1
> >> stepChanges detectIndex ?
> >
> >
> > How do you mean? It would be the same
> >
> > santaFloorOnBasement
> > "calculates which step take Santa to the basement"
> >
> > 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.
> >
> >
> > Because earlier you were comparing strings and not characters, I assumed
> > your input was an array of strings like #('(' '(' '('). but you can fix
> > that by changing `input collect:` -> `input asArray collect:` and `c = '('`
> > -> `c = $(`.
>
> Using '(' instead of $( is indeed an error, but it isn't the cause of
> the Improper store error.
I was too quick to respond here, I didn't look at the #asArray. Sorry!
But still suggest Roelof looks at the debugger...
> Roelof, I really suggest you trigger this error again, start the
> debugger and then take a look in the call stack (I'm assuming you're
> familiar with at least one other programming language, so should be
> able to figure out the debugger).
Cheers,
Alistair
