Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.forth > #50194

Re: A use for quotations

From "HAA" <someone@microsoft.com>
Newsgroups comp.lang.forth
Subject Re: A use for quotations
Date 2016-08-18 12:18 +1000
Organization Aioe.org NNTP Server
Message-ID <np35u4$141d$1@gioia.aioe.org> (permalink)
References <noqejl$k6$1@dont-email.me> <np0el8$1k5c$1@gioia.aioe.org> <np19dr$3ko$1@dont-email.me>

Show all headers | View raw


Gerry Jackson wrote:
> On 17/08/2016 02:29, HAA wrote:
> > ...
> > I see :NONAME is a primitive - a low-level mechanism that can be applied
> > to a variety of situations.  While name-lessness in general is a bad thing
> > (hard to test,
>
> I've used :NONAME extensively and don't think such definitions are any
> harder to test than other definitions.

A name is convenient and always available, an xt often isn't.  Quotations are
worse when it comes to testing because they must be embedded in another
definition (funny because that was also the complaint about CATCH :)

> >  e.g.
> > : +IS ( xt <name> -- )
> >    >r  :noname  r> compile,  ' >body  dup >r  @ compile,  postpone ;  r> ! ;
>
> When you post cryptic code like that you really ought to provide an
> example of use - one writer many readers. Ordinarily I wouldn't have
> bothered to decode it but as you replied to me I felt obliged to.

It was just an example and the name should have been a 'give-away' :)
+IS is an extension to DEFER IS.  Where IS initializes a DEFER with
an xt, +IS prepends another to it.

> > IMO quotations aren't syntactic sugar for :NONAME,
>
> I and the RfD didn't say they were. Code written using quotations can be
> rewritten using :NONAME definitions but with (probably) reduced
> readability.
>
> I just presented an example where rewriting using :NONAME
> is possible but not sensible. The converse may or may not be true.

You are saying quotations are justified because :noname is inconvenient.
I'm saying :noname is appropriate for the uses to which it was intended.


Back to comp.lang.forth | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread


Thread

A use for quotations Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-14 19:51 +0100
  Re: A use for quotations Bernd Paysan <bernd.paysan@gmx.de> - 2016-08-14 19:44 +0000
    Re: A use for quotations Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-14 22:57 +0100
  Re: A use for quotations hughaguilar96@gmail.com - 2016-08-14 14:05 -0700
    Re: A use for quotations Cecil Bayona <cbayona@cbayona.com> - 2016-08-14 16:16 -0500
  Re: A use for quotations "HAA" <someone@microsoft.com> - 2016-08-17 11:29 +1000
    Re: A use for quotations Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-17 10:06 +0100
      Re: A use for quotations "HAA" <someone@microsoft.com> - 2016-08-18 12:18 +1000
        Re: A use for quotations Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-19 16:07 +0100
          Re: A use for quotations "Elizabeth D. Rather" <erather@forth.com> - 2016-08-19 09:35 -1000
            Re: A use for quotations Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-19 23:03 +0100
          Re: A use for quotations "HAA" <someone@microsoft.com> - 2016-08-20 13:19 +1000
            Re: A use for quotations Coos Haak <htrofhc@gmail.com> - 2016-08-20 14:55 +0200
              Re: A use for quotations anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-20 15:38 +0000
              Re: A use for quotations "HAA" <someone@microsoft.com> - 2016-08-22 14:58 +1000
                Re: A use for quotations Julian Fondren <julian.fondren@gmail.com> - 2016-08-22 04:18 -0700
                Re: A use for quotations Coos Haak <htrofhc@gmail.com> - 2016-08-22 15:13 +0200
                Re: A use for quotations "HAA" <someone@microsoft.com> - 2016-08-24 22:20 +1000
                Re: A use for quotations hughaguilar96@gmail.com - 2016-08-24 09:44 -0700
                Re: A use for quotations Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-25 10:09 +0100
                Re: A use for quotations "HAA" <someone@microsoft.com> - 2016-08-27 12:24 +1000
  Re: A use for quotations humptydumpty <ouatubi@gmail.com> - 2016-08-17 00:55 -0700
    Re: A use for quotations hughaguilar96@gmail.com - 2016-08-17 02:19 -0700
      Re: A use for quotations humptydumpty <ouatubi@gmail.com> - 2016-08-17 07:49 -0700
        Re: A use for quotations humptydumpty <ouatubi@gmail.com> - 2016-08-17 08:18 -0700
    Re: A use for quotations Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-17 10:30 +0100
      Re: A use for quotations Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-08-17 10:34 +0100
        Re: A use for quotations humptydumpty <ouatubi@gmail.com> - 2016-08-17 07:43 -0700
      Re: A use for quotations anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-18 07:35 +0000

csiph-web