I've read JRM's Syntax-rules Primer for the Merely Eccentric and it has helped me understand syntax-rules and how it's different from common-lisp's define-macro. syntax-rules is only one way of imp...

I found myself defining syntax parameters with identical definitions except for their name so I decided to write a macro to make this simpler: (define-syntax (test-case-parameter stx) (syntax-par...

What's the simplest way to define a capturing macro using define-syntax or define-syntax-rule in Racket? As a concrete example, here's the trivial aif in a CL-style macro system. (defmacro aif (...

To give a simple example: (define-macro-variable _iota 0) ; define-macro-variable does not really exist (define-syntax (iota stx) (syntax-case stx () ((iota) (let ((i _iota)) (set! _iota (+ i...

I've been told that "call/cc" can be used to implement arbitrary control flow constructs so I'm trying to implement all such constructs using "call/cc" but I'm having trouble. Assuming I didn't hav...

I'm working though SICP and wanted to try out some of the examples in guile. I'm trying the stream examples and wanted an implementation for cons-stream, which I got from this StackOverflow questio...

R5RS gives proposed macro definitions for library forms of syntax: http://schemers.org/Documents/Standards/R5RS/HTML/r5rs-Z-H-10.html#%_sec_7.3 Which also defines letrec, in a very complicated wa...

I have been writing Common Lisp macros, so Scheme's R5Rs macros are a bit unnatural to me. I think I got the idea, except that I don't understand how one would use vector patterns in syntax-rules: ...

Can a macro be written in Scheme (with define-syntax, for example) which will take expressions like this: (op a b c d e f g h i j) And yield expressions like this as output? (op (op (op (op (op...