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Re: Common Lisp solved this problem 20 years ago

This page is part of the web mail archives of SRFI 77 from before July 7th, 2015. The new archives for SRFI 77 contain all messages, not just those from before July 7th, 2015.

Aubrey Jaffer wrote:
Common Lisp HyperSpec (TM)
does not index any with-<type> symbols.  How is this attributable to

Also, would with-fixnum declare uniform arrays and vectors?

with-<type> were a toy examples. Sorry for the confusion. If I remember, correctly, real Common Lisp would look like:

  (lambda (x y)
    (declare (type double-float x y))
    (/ x y)))

I'm not wedded to any particular syntax, though.

Yes, Common Lisp type specifiers can specify the element types of an vector. See the first example in section 4.2.3 of the HyperSpec:



Dr Alan Watson
Centro de Radioastronomía y Astrofísica
Universidad Astronómico Nacional de México