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Ingy döt Net 2013-04-10 23:57:08 -07:00
parent 47bf37c096
commit b83f433714
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Task/Power-set/Racket/power-set.rkt Normal file
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;;; Direct translation of 'functional' ruby method
(define (powerset s)
(for/fold ([outer-set (set(set))])
([element s])
(set-union outer-set
(list->set (set-map
outer-set
(λ(inner-set)(set-add inner-set element)))))))