Re: Help with Array implementation

From	rickman <gnuarm@gmail.com>
Newsgroups	comp.lang.forth
Subject	Re: Help with Array implementation
Date	2012-09-15 12:16 -0400
Organization	A noiseless patient Spider
Message-ID	<k329l1$eks$1@dont-email.me> (permalink)
References	<7ae00a01-5ca8-485e-9c42-6ee1cc4627c7@googlegroups.com> <15beef8b-05aa-442d-9661-1731612dd802@t9g2000pbc.googlegroups.com> <a53f2aa4-7ee0-4237-a902-522db6ca1a2f@googlegroups.com> <928e8f62-5a29-4984-a6d8-d7dee706e8e5@googlegroups.com>

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On 9/14/2012 4:38 PM, hughaguilar96@yahoo.com wrote:
> On Friday, September 14, 2012 9:58:02 AM UTC-7, (unknown) wrote:
>>>>>> I have a couple of implementations of arrays in my novice package:>  >  http://www.forth.org/novice.html>  >  >  >  I recommend that you not mess with implementing data structures until>  >  you have attained some experience writing programs. Does you Array implementation have bounds checking?
>
> Yes. 1ARRAY etc. have bounds checking. There is a compile-time switch that turns this on and off. As I recall, I am only checking for too large of an index and not for negative indices --- you might want to add the check for negative indices as an exercise. As I recall, ARY doesn't have bounds checking at all.

I did something like this with help from this group I seem to recall.  I 
used "within" to check both the upper and lower bound of the index.  The 
funny part is that this code uses a lot of forth words that I use no 
where else, so every time I return to this code I have to relearn it all 
over again.  I guess the arteries are starting to harden...

Rick

Thread

Help with Array implementation programmingkidx@gmail.com - 2012-09-13 19:40 -0700
  Re: Help with Array implementation programmingkidx@gmail.com - 2012-09-13 19:46 -0700
  Re: Help with Array implementation Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-09-13 19:50 -0700
    Re: Help with Array implementation programmingkidx@gmail.com - 2012-09-14 09:58 -0700
      Re: Help with Array implementation Jason Damisch <jasondamisch@yahoo.com> - 2012-09-14 10:56 -0700
        Re: Help with Array implementation Doug Hoffman <glidedog@gmail.com> - 2012-09-14 17:12 -0400
      Re: Help with Array implementation hughaguilar96@yahoo.com - 2012-09-14 13:38 -0700
        Re: Help with Array implementation rickman <gnuarm@gmail.com> - 2012-09-15 12:16 -0400
        Re: Help with Array implementation Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-09-16 16:25 -0700
          Re: Help with Array implementation Mark Wills <forthfreak@gmail.com> - 2012-09-17 00:22 -0700
  Re: Help with Array implementation "Elizabeth D. Rather" <erather@forth.com> - 2012-09-13 21:06 -1000
    Re: Help with Array implementation "Elizabeth D. Rather" <erather@forth.com> - 2012-09-13 21:29 -1000
      Re: Help with Array implementation Mark Wills <forthfreak@gmail.com> - 2012-09-14 00:45 -0700
        Re: Help with Array implementation "Elizabeth D. Rather" <erather@forth.com> - 2012-09-13 21:55 -1000
          Re: Help with Array implementation Coos Haak <chforth@hccnet.nl> - 2012-09-14 21:10 +0200
            Re: Help with Array implementation "Elizabeth D. Rather" <erather@forth.com> - 2012-09-14 09:14 -1000
    Re: Help with Array implementation Doug Hoffman <glidedog@gmail.com> - 2012-09-14 09:25 -0400
  Re: Help with Array implementation Mark Wills <forthfreak@gmail.com> - 2012-09-14 00:47 -0700

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