[scheme] Forum Topics

**note:** This was also posted to the [comp.lang.scheme](https://groups.google.com/forum/#!forum/comp.lang.scheme) earlier today. I normally wouldn't cross-post, but after I noticed the extremely low traffic on the newsgroup, I decided to try a more active, if less specialized, forum. As part of a larger project, I am writing a macro that defines a …

I have built this function which calls a couple other functions to get the oprator and numbers for an arithmetic operation but I get the error `function call: expected a function after the open parenthesis, but received '+`. normaly you invoke addition as (+ 5 6) and multiplication as (\* …

Hey all; I've been reading SICP and been wanting to write code from the book and the solutions to exercises and execute that code. I find MIT-GNU Scheme, the recommended interpreter, to be very confusing and very slow or impossible to use. I can't even get some of the basic …

why arr[-2] gives value?

Could someone help me to convert this Scheme Code to Objective-C? (define-type RCFAE [num (n number?)] [add (lhs RCFAE?) (rhs RCFAE?)] [id (name symbol?)] [fun (param symbol?) (body RCFAE?)] [app (fun-expr RCFAE?) (arg-expr RCFAE?)] [with (id symbol?) (named-expr RCFAE?) (body RCFAE?)] [if0 (cond RCFAE?) (then RCFAE?) (else RCFAE?)] [rec (id …