If this is about sequencing regexp's listen to everyone else who replied.
If this is about sequencing a bunch of functional manipulations, try this:
#lang racket
;; this would be in a library
(define-syntax let**
(syntax-rules ()
[(_ tmp body) body]
[(_ tmp a b ... body) (let ([tmp a]) (let** tmp b ... body))]))
;; -----------------------------------------------------------------------------
(define (fix str)
(let** tmp str
(regexp-replace* " / " tmp "_")
(regexp-replace* " " tmp "_")
(regexp-replace* "%" tmp "")
(regexp-replace* "-" tmp "_")
(string-upcase tmp)))
(fix "this/is%a-test right?")
I have found this useful and readable in circumstances where the above is a
sequence of say image manipulations where even a for/fold isn't quite right.
-- Matthias
____________________
Racket Users list:
http://lists.racket-lang.org/users
