[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Issue: IGNORE-VARIABLE (Version 1)
- To: Kent M Pitman <KMP@STONY-BROOK.SCRC.Symbolics.COM>
- Subject: Re: Issue: IGNORE-VARIABLE (Version 1)
- From: David N Gray <Gray@DSG.csc.ti.com>
- Date: Wed, 8 Feb 89 10:56:57 CST
- Cc: CL-Cleanup@SAIL.Stanford.EDU
- In-reply-to: Msg of Mon, 6 Feb 89 16:51 EST from Kent M Pitman <KMP@STONY-BROOK.SCRC.Symbolics.COM>
- Sender: GRAY@Kelvin.csc.ti.com
> Proposal (IGNORE-VARIABLE:SPECIAL-TREATMENT):
> 1. Define that the variable IGNORE (in the LISP package only) is always
> implicitly ignored. It is an error to use the variable IGNORE.
> A declaration of (IGNORE IGNORE) is permitted, but redundant.
> 2. Permit the variable IGNORE (or any variable declared ignored with the
> IGNORE declaration) to be a duplicated variable in a binding list.
The Explorer already supports this except for the part about permitting
multiple use of any variable declared IGNORE.
I agree that this is a convenience which is often used, but I am less
sure about whether it is good programming practice.