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; Scheme 9 from Empty Space, Function Library
; By Nils M Holm, 2009
; Placed in the Public Domain
;
; (implode list) ==> symbol
;
; Implode a list of single-character symbols into a symbol.
;
; Example: (implode '(b l a c k h o l e)) ==> blackhole
(define (implode x)
(letrec
((sym->char
(lambda (x)
(let ((str (symbol->string x)))
(if (= (string-length str) 1)
(string-ref str 0)
(error "bad symbol in implode" x))))))
(string->symbol
(list->string (map sym->char x)))))
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