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- To: NIL at MIT-MC, (BUG LISP) at MIT-MC, (BUG LISPM) at MIT-MC
- Subject: IF macro
- From: MOON at MIT-MC (David A. Moon)
- Date: Sat, 29 Jul 78 10:36:00 GMT
- Cc: BSG at MIT-MC
- Original-date: 29 JUL 1978 0636-EDT
I don't use this myself, but I thought that if we can have 100
pieces of mail about lsubr cons and backquote this may be worthy
There are extant at least a half-dozen different incompatible IF
macros. Since so many people seem to like it, it would seem to
be a good idea to standardize on one that would be compatible across
The one I like the best is Bernie Greenberg's. It looks like:
<then1> <then2> ....
<else1> <else2> ....)
The keyword ELSE and the else-forms may be omitted. The implied
PROGN seems so useful as to counteract the slight cruftiness of
having an extra embedded keyword.
For myself, I would probably continue to use COND.