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Ingy döt Net 2013-04-10 12:38:42 -07:00
parent 3af7344581
commit 86c034bb8b
1364 changed files with 21352 additions and 0 deletions
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4
Task/Search-a-list/Racket/search-a-list-1.rkt Normal file
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(define (index xs y)
(for/first ([(x i) (in-indexed xs)]
#:when (equal? x y))
i))

4
Task/Search-a-list/Racket/search-a-list-2.rkt Normal file
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(define (index-last xs y)
(for/last ([(x i) (in-indexed xs)]
#:when (equal? x y))
i))

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Task/Search-a-list/Racket/search-a-list-3.rkt Normal file
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(define haystack '("Zig" "Zag" "Wally" "Ronald" "Bush" "Krusty" "Charlie" "Bush" "Bozo"))
(for/list ([needle '("Bender" "Bush")])
(index haystack needle))
(for/list ([needle '("Bender" "Bush")])
(index-last haystack needle))