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How about this one for beginning: (define-macro (my-inc p0)(set p0 (+ (eval p0) 1))) The above fails with the following error when called through my sum function above: ERR: symbol expected in function set : p0 What I'm interested is having a function/macro/fexpr that can modify its arguments in-pl...

Let me clarify my question: Is it possible to create my version of inc, my-inc? (define (sum (x 0)) (my-inc 0 x)) (sum 1) ;=> 1 (sum 2) ;=> 3 sum ;=> (lambda ((x 0)) (my-inc 3 x)) My gut instinct tells me in order to have a self-modifying code like the above, my-inc must have a reference to the encl...

Hi, is it possible to create a user-defined function much like what inc does: in-place parameter substitution, or is this only available for built-in functions?

Where do newLISPers hangout? Is there a #newlisp IRC channel somewhere?

Loving the language so far.
The above returns true. Shouldn't it be nil instead? Where can I submit bug reports? Do we have an bug tracker?