How to return array keys into another array

stéphane ducasse ducasse at iam.unibe.ch
Fri Jun 11 07:14:39 UTC 2004


Hi adrian

do you know the free smalltalk books?
http://www.iam.unibe.ch/~ducasse/FreeBooks.html

STef

On 11 juin 04, at 01:03, adrian voss wrote:

> Hi, thank you all for the advice.  Reason for using the indices is 
> that in
> this instance they refer to the seat numbers in a fictitious 
> reservation
> program for a course I am on.  The question asked for arrays to be 
> used.
>
> I really hope that there is an easier way to do this because this had 
> me
> stumped.
>
> Again, thanks for your time.
>
> Adrian
>
> -----Original Message-----
> From: squeak-dev-bounces at lists.squeakfoundation.org
> [mailto:squeak-dev-bounces at lists.squeakfoundation.org] On Behalf Of Tim
> Rowledge
> Sent: 10 June 2004 20:16
> To: squeak-dev at lists.squeakfoundation.org
> Subject: Re: How to return array keys into another array
>
> Avi Bryant <avi at beta4.com> wrote:
>
>>> How about
>>> a2 := a select:[:i| i = 'free]
>>
>> No, because he wanted the indices, not the actual values.
> D'h. Missed the key bit.
>  However, I
>> suspect this isn't the whole story; it's unusual enough to deal with
>> array indices directly that I wonder what the final goal is here, and
>> whether there might be some better way of achieving it...
> It's pretty unlikely that a sensible design would need the indices.
>
> Tell us more about the problem - this is probably a good learning
> opportunity.
>
>
> tim
> --
> Tim Rowledge, tim at sumeru.stanford.edu, http://sumeru.stanford.edu/tim 
> Useful
> random insult:- Answers the door when the phone rings.
>
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