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Re: How to detect a procedure
From: |
Rob Browning |
Subject: |
Re: How to detect a procedure |
Date: |
Tue, 30 Apr 2002 21:35:40 -0500 |
User-agent: |
Gnus/5.090006 (Oort Gnus v0.06) Emacs/21.2 (i386-debian-linux-gnu) |
Bruce Korb <address@hidden> writes:
> I would like:
>
> (defined-as? 'mumble scm_class_procedure)
>
> to be equivalent to:
>
> (and (defined? 'mumble) (procedure? mumble))
>
> but the latter is conceptually simpler. I like simple.
or if you really like the idea of a helper, perhaps (nb: not tested,
or even carefully checked :>):
(define-macro (defined-as? item predicate)
`(and (defined? ,item) (,predicate ,item)))
i.e.
(defined-as? 'mumble procedure?)
--
Rob Browning
rlb @defaultvalue.org, @linuxdevel.com, and @debian.org
Previously @cs.utexas.edu
GPG=1C58 8B2C FB5E 3F64 EA5C 64AE 78FE E5FE F0CB A0AD
- How to detect a procedure, Bruce Korb, 2002/04/28
- Re: How to detect a procedure, bitwize, 2002/04/29
- Re: How to detect a procedure, rm, 2002/04/29
- Re: How to detect a procedure, Lynn Winebarger, 2002/04/29
- Re: How to detect a procedure, Bruce Korb, 2002/04/29
- Re: How to detect a procedure, Rob Browning, 2002/04/30
- Re: How to detect a procedure, Bruce Korb, 2002/04/30
- Re: How to detect a procedure,
Rob Browning <=
- Re: How to detect a procedure, Lynn Winebarger, 2002/04/30
- Re: How to detect a procedure, Rob Browning, 2002/04/30