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(module utils *
(import scheme
(chicken base)
(chicken irregex)
matchable)
(define-syntax λ
(syntax-rules ()
((_ expr ...)
(lambda expr ...))))
(define-syntax @
(syntax-rules ()
((_ fn-body expr ...)
(lambda (x) (fn-body expr ... x)))))
(define (last lst)
(if (null? (cdr lst))
(car lst)
(last (cdr lst))))
(define (pipe x . fns)
(match fns
[() x]
[(fn . rest) (apply pipe (fn x) rest)]))
(define (flow . fns)
(lambda (x) (apply pipe x fns)))
(define (replace irx replacement in)
(irregex-replace irx in replacement))
(define (replace-all irx replacement in)
(irregex-replace/all irx in replacement))
(define (submatch m #!optional (index 1))
(irregex-match-substring m index))
(define (assocar key alist)
(match (assoc key alist)
[#f #f]
[pair (car pair)]))
(define (assocdr key alist)
(match (assoc key alist)
[#f #f]
[pair (cdr pair)]))
)
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