Re: "Forth is Sudoku for programmers"

From	Paul Rubin <no.email@nospam.invalid>
Newsgroups	comp.lang.forth
Subject	Re: "Forth is Sudoku for programmers"
Date	2016-08-28 15:25 -0700
Organization	A noiseless patient Spider
Message-ID	<87twe4pm35.fsf@jester.gateway.pace.com> (permalink)
References	<1e1c16c6-300f-4c4f-8590-379029478232@googlegroups.com> <065b6c2a-66ea-4f31-998d-e50f6b9ebd7e@googlegroups.com> <1f719a0d-3e81-48d3-8a49-ae06b189babe@googlegroups.com> <878tw1xi2y.fsf@jester.gateway.pace.com> <npvegv$iup$1@cherry.spenarnc.xs4all.nl>

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albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) writes:
>>In Forth without garbage collection, the best I see as feasible is to
>>allocate those closures on the locals or return stack, so they go away
>>when the outer function cleans up and returns.
>
> This is c-thinking: "keep your locals with the return address because
> we've only one stack". ..  Data belongs on the data stack. I get
> annoyed when the first thought is locals (no way!) or the return stack
> (limited size, except on gforth for Those Who Know The Ways). Store
> temporary data on the data stack. Unless.

We were talking how to deal with quotations (closures) that capture
locals from the parent scope.  So locals are already in play.  The idea
of a quotation is that it puts an xt on the data stack and doesn't leave
other stuff there.  So the captured locals have to go someplace else.
Some Forths use the return stack to hold locals, so in such systems the
return stack is a reasonable place for the closure enrivonment.  Gforth
has a separate locals stack, so that's another place to put it.

Thread

Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-12 14:56 -0700
  Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-12 15:02 -0700
  Re: "Forth is Sudoku for programmers" Doug Hoffman <glidedog@gmail.com> - 2016-08-12 22:05 -0400
    Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-12 21:05 -0700
      Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-12 22:15 -0700
        Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-12 23:39 -0700
          Re: "Forth is Sudoku for programmers" Julian Fondren <julian.fondren@gmail.com> - 2016-08-13 00:03 -0700
          Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-13 00:07 -0700
            Re: "Forth is Sudoku for programmers" Doug Hoffman <glidedog@gmail.com> - 2016-08-13 07:35 -0400
              Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-13 17:17 -0700
                Re: "Forth is Sudoku for programmers" Julian Fondren <julian.fondren@gmail.com> - 2016-08-13 20:04 -0700
                Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-13 20:38 -0700
                Re: "Forth is Sudoku for programmers" Julian Fondren <julian.fondren@gmail.com> - 2016-08-13 20:46 -0700
                Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-14 06:02 -0700
                Re: "Forth is Sudoku for programmers" Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-14 23:04 +0100
                Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-14 16:01 -0700
                Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-13 21:53 -0700
                Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-14 07:45 -0700
                Re: "Forth is Sudoku for programmers" franck.bensusan@gmail.com - 2016-08-15 06:44 -0700
                Re: "Forth is Sudoku for programmers" Melzzzzz <mel@zzzzz.com> - 2016-08-14 19:57 +0200
                Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-14 11:17 -0700
                Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-14 13:59 -0700
                Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-14 14:09 -0700
                Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-14 15:48 -0700
                Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-14 18:34 -0700
                Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-19 02:24 -0700
                Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-20 19:26 -0700
                Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-21 14:58 -0700
                Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-21 15:51 -0700
                Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-21 15:52 -0700
                Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-24 16:35 -0700
                Re: "Forth is Sudoku for programmers" jim.brakefield@ieee.org - 2016-08-14 10:32 -0700
                Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-14 13:55 -0700
            Re: "Forth is Sudoku for programmers" albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-08-28 21:37 +0200
              Re: "Forth is Sudoku for programmers" Paul Rubin <no.email@nospam.invalid> - 2016-08-28 15:25 -0700
                Re: "Forth is Sudoku for programmers" jim.brakefield@ieee.org - 2016-08-28 16:16 -0700
                Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-28 16:44 -0700
          Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-13 20:00 -0700
            Re: "Forth is Sudoku for programmers" lawrencedo99@gmail.com - 2016-08-13 20:39 -0700
    Re: "Forth is Sudoku for programmers" "Elizabeth D. Rather" <erather@forth.com> - 2016-08-12 22:11 -1000
      Re: "Forth is Sudoku for programmers" dhoffman888@gmail.com - 2016-08-13 03:39 -0700
  Re: "Forth is Sudoku for programmers" Julian Fondren <julian.fondren@gmail.com> - 2016-08-12 20:18 -0700
    Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-12 22:35 -0700
    Re: "Forth is Sudoku for programmers" hughaguilar96@gmail.com - 2016-08-12 22:52 -0700
      Re: "Forth is Sudoku for programmers" Julian Fondren <julian.fondren@gmail.com> - 2016-08-12 22:55 -0700
        Re: "Forth is Sudoku for programmers" Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-08-13 11:31 +0100
  Re: "Forth is Sudoku for programmers" "HAA" <someone@microsoft.com> - 2016-08-15 11:47 +1000
    Re: "Forth is Sudoku for programmers" "HAA" <someone@microsoft.com> - 2016-08-15 12:05 +1000

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