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Groups > comp.lang.forth > #56452
| From | Alex <alex@rivadpm.com> |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: Define a variable only not defined. |
| Date | 2017-03-29 14:41 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <obgdcf$cjq$1@dont-email.me> (permalink) |
| References | <252d2e3a-a277-4447-9bb0-7de4955d03d6@googlegroups.com> <60ffebaf-082e-440e-a294-d9ebb64a38cc@googlegroups.com> <0d6a701e-6d94-4880-8242-8b09ebd793ec@googlegroups.com> <ir9ahuw05px3.qz5gr8urz6n3.dlg@40tude.net> |
On 3/29/2017 13:58, Coos Haak wrote: > Op Wed, 29 Mar 2017 04:26:54 -0700 (PDT) schreef Faisal: > >> Is this can be written as forth word? > > : newvar ( "ccc" -- ) > >in @ bl word find nip 0= > if >in ! variable > else drop > then > ; > > groet Coos > With the caveat that if it doesn't declare a variable if there is a pre-existing word of the same name in the search order, : foo 2 3 ; newvar foo 10 foo ! is likely to cause the system to fail as it tries to store 2 into 3. -- Alex
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Define a variable only not defined. Faisal <faisalm83@gmail.com> - 2017-03-29 02:39 -0700
Re: Define a variable only not defined. minforth@arcor.de - 2017-03-29 04:20 -0700
Re: Define a variable only not defined. Faisal <faisalm83@gmail.com> - 2017-03-29 04:26 -0700
Re: Define a variable only not defined. Coos Haak <htrofhc@gmail.com> - 2017-03-29 14:58 +0200
Re: Define a variable only not defined. Alex <alex@rivadpm.com> - 2017-03-29 14:41 +0100
Re: Define a variable only not defined. anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-29 13:54 +0000
Re: Define a variable only not defined. Mikael Nordman <oh2aun@gmail.com> - 2017-03-29 12:06 -0700
Re: Define a variable only not defined. Coos Haak <htrofhc@gmail.com> - 2017-03-29 21:30 +0200
Re: Define a variable only not defined. Mikael Nordman <oh2aun@gmail.com> - 2017-03-29 12:53 -0700
Re: Define a variable only not defined. "HAA" <someone@microsoft.com> - 2017-03-30 10:03 +1000
Re: Define a variable only not defined. Julian Fondren <julian.fondren@gmail.com> - 2017-03-29 19:00 -0700
Re: Define a variable only not defined. "Elizabeth D. Rather" <erather@forth.com> - 2017-03-29 16:35 -1000
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