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Re: defvars at compile time
From: |
Bill Wohler |
Subject: |
Re: defvars at compile time |
Date: |
Thu, 16 Mar 2006 14:51:12 -0800 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
address@hidden (Johan Bockgård) writes:
> Kevin Rodgers <address@hidden> writes:
>
>> (defmacro symbol-value-safe (symbol)
>> "Return SYMBOL's value, but avoid signaling an error if it is void.
>> If SYMBOL is void, return nil."
> [...]
>
> ,----[ C-h f bound-and-true-p RET ]
> | bound-and-true-p is a Lisp macro in `bindings.el'.
> | (bound-and-true-p VAR)
> |
> | Return the value of symbol VAR if it is bound, else nil.
> `----
Nice. Too bad it's not available in XEmacs (21).
Funny name. Seems like value-if-bound would be more accurate.
--
Bill Wohler <address@hidden> http://www.newt.com/wohler/ GnuPG ID:610BD9AD
Maintainer of comp.mail.mh FAQ and MH-E. Vote Libertarian!
If you're passed on the right, you're in the wrong lane.
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- Re: defvars at compile time, Katsumi Yamaoka, 2006/03/15
- Re: defvars at compile time, Kevin Rodgers, 2006/03/16
- Re: defvars at compile time, Johan Bockgård, 2006/03/16
- Re: defvars at compile time,
Bill Wohler <=
- Re: defvars at compile time, Miles Bader, 2006/03/16
- Re: defvars at compile time, Richard Stallman, 2006/03/17
- Re: defvars at compile time, Stefan Monnier, 2006/03/20
- Re: defvars at compile time, Katsumi Yamaoka, 2006/03/21
- Re: defvars at compile time, Stefan Monnier, 2006/03/27
- Re: defvars at compile time, Bill Wohler, 2006/03/27
- Re: defvars at compile time, Stefan Monnier, 2006/03/28
- Re: defvars at compile time, Richard Stallman, 2006/03/29
- Re: defvars at compile time, Richard Stallman, 2006/03/28