Comments on: Lisp macros part 2

By: Christopher

Christopher — Tue, 16 Dec 2008 13:45:37 +0000

i know it’s messy. any other solution how to do it, without using standard looping macros?

By: foo

foo — Tue, 16 Dec 2008 11:23:21 +0000

Well, they won’t work in a) implementations that use only a compiler (there are several) or use some interpreter variant, where code gets expanded fully before executed.

You don’t really want to use tagbody in your code.

By: Christopher

Christopher — Tue, 16 Dec 2008 10:40:08 +0000

thanks for the advise.
i wrote these macros while still using clisp and it seemed to work, but you’re right in that they only work when in interpreted mode.
i’ve found a better way to do this via tagbody & go… i’ll probably post them here too.

By: foo

foo — Tue, 16 Dec 2008 10:03:03 +0000

The for each macro does not work. Try to use it in a function and compile that file. It only works for literal lists in an interpreter mode that does not expand the code completely before executing it. The macro calls itself and dies in recursion.

You should not use ,list multiple times in the macro.