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Groups > comp.lang.forth > #55859

Re: When to use !name vs. name! ?

From "HAA" <someone@microsoft.com>
Newsgroups comp.lang.forth
Subject Re: When to use !name vs. name! ?
Date 2017-03-17 11:19 +1100
Organization Aioe.org NNTP Server
Message-ID <oaf9v0$2e6$1@gioia.aioe.org> (permalink)
References <oa7clo$1pao$1@gioia.aioe.org> <c7253573-ae6f-4817-87d2-d252e12fdb84@googlegroups.com><oacdb8$1ckm$1@gioia.aioe.org> <9082c24f-cba7-4b02-9413-60c8610ef9fe@googlegroups.com>

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Mark Wills wrote:
> On Wednesday, 15 March 2017 21:57:01 UTC, HAA  wrote:
> > NN wrote:
> > > Assuming name is a variable.
> > > I would use !name to change the value in name.
> > > I would use name! to change the value pointed to by the value stored in name.
> > >
> > > If name was a register then you can see how that extends.
> > >
> > > NN
> >
> > Staying with the idea of rules for the different forms:
> >
> > Where name is a variable (of any datatype), then  name@  name!
> > can be short-forms for  name <fetch>  and  name <store>.
> >
> > Many functions end up with GET or SET as a prefix to the name.
> > This can get clunky quickly, so using  @name  and  !name  for
> > those may be a better alternative.
>
> This going off on a tangent somewhat, but you might find this interesting:
>
> http://turboforth.net/resources/fastvars.html
>
> Regards
>
> Mark

Interesting!  Has the advantage of not having to remember whether 'name'
was a VARIABLE or a VALUE.


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Thread

When to use  !name  vs.  name! ? "HAA" <someone@microsoft.com> - 2017-03-14 11:15 +1100
  Re: When to use  !name  vs.  name! ? hughaguilar96@gmail.com - 2017-03-13 18:27 -0700
    Re: When to use  !name  vs.  name! ? Mark Wills <markwills1970@gmail.com> - 2017-03-14 01:33 -0700
  Re: When to use  !name  vs.  name! ? Mark Wills <markwills1970@gmail.com> - 2017-03-14 01:30 -0700
  When to use  !name  vs.  name! ? NN <november.nihal@gmail.com> - 2017-03-14 02:56 -0700
    Re: When to use  !name  vs.  name! ? "HAA" <someone@microsoft.com> - 2017-03-16 08:59 +1100
      Re: When to use  !name  vs.  name! ? Mark Wills <markwills1970@gmail.com> - 2017-03-16 02:11 -0700
        Re: When to use  !name  vs.  name! ? "HAA" <someone@microsoft.com> - 2017-03-17 11:19 +1100
  Re: When to use !name vs. name! ? rickman <gnuarm@gmail.com> - 2017-03-16 20:46 -0400
    Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-16 21:34 -1000
      Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-18 09:49 +1100
        Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-17 13:08 -1000
          Re: When to use !name vs. name! ? rickman <gnuarm@gmail.com> - 2017-03-17 19:35 -0400
            Re: When to use !name vs. name! ? Mark Wills <markwills1970@gmail.com> - 2017-03-18 00:51 -0700
            Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-19 10:47 +1100
              Re: When to use !name vs. name! ? rickman <gnuarm@gmail.com> - 2017-03-18 22:18 -0400
                Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-18 16:36 -1000
                Re: When to use !name vs. name! ? rickman <gnuarm@gmail.com> - 2017-03-18 23:53 -0400
                Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-18 22:22 -1000
                Re: When to use !name vs. name! ? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-19 16:03 +0000
                Re: When to use !name vs. name! ? Alex <alex@rivadpm.com> - 2017-03-19 17:42 +0000
                Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-19 13:10 -1000
                Re: When to use !name vs. name! ? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-03-19 13:34 +0100
                Re: When to use !name vs. name! ? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-19 16:23 +0000
                Re: When to use !name vs. name! ? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-03-19 20:47 +0100
                Re: When to use !name vs. name! ? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-20 03:47 -0500
                Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-20 09:41 +1100
                Re: When to use !name vs. name! ? Coos Haak <htrofhc@gmail.com> - 2017-03-20 01:24 +0100
                Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-21 12:10 +1100
                Re: When to use !name vs. name! ? hughaguilar96@gmail.com - 2017-03-20 18:45 -0700
                Re: When to use !name vs. name! ? Coos Haak <htrofhc@gmail.com> - 2017-03-21 14:58 +0100
                Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-22 19:49 +1100
          Re: When to use !name vs. name! ? hughaguilar96@gmail.com - 2017-03-17 16:46 -0700
  Re: When to use  !name  vs.  name! ? Lars Brinkhoff <lars.spam@nocrew.org> - 2017-04-12 08:13 +0200

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