Re: e and pi

[Helmut Eller]

* Lars Magne Ingebrigtsen [2010-09-17 15:22] writes:

> Having
> defconst not introduce special variables would be non-ideal (in my
> opinion), since defconst does do that in Common Lisp.

In CL it's called DEFCONSTANT and constants are not special.  Using a
constant in SETQ, LET, or LAMBDA is not allowed (it's an error in most
implementations, just like setq on t is an error in Elisp).  Even
evaluating DEFCONSTANT twice is only specified if the old and new value
are sufficiently similar (some implementations ask before redefining a
constant with a non-eql value).

Helmut