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(pairlisto l1 l2 pairs): pairs is the zipped list of pairs (l1[i] l2[i]). Recurses on both l1 and l2 in lockstep, building pairs in parallel. Runs forward, can recover l1 given l2 and pairs, can recover l2 given l1 and pairs. Different-length lists fail. 5 new tests, 431/431 cumulative.
42 lines
783 B
Plaintext
42 lines
783 B
Plaintext
;; lib/minikanren/tests/pairlisto.sx — zip two lists into pair list.
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(mk-test
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"pairlisto-empty"
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(run* q (pairlisto (list) (list) q))
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(list (list)))
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(mk-test
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"pairlisto-equal-lengths"
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(run*
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q
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(pairlisto (list 1 2 3) (list :a :b :c) q))
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(list
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(list (list 1 :a) (list 2 :b) (list 3 :c))))
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(mk-test
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"pairlisto-recover-l1"
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(run*
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q
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(pairlisto
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q
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(list :a :b :c)
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(list (list 10 :a) (list 20 :b) (list 30 :c))))
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(list (list 10 20 30)))
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(mk-test
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"pairlisto-recover-l2"
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(run*
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q
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(pairlisto
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(list 1 2 3)
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q
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(list (list 1 :x) (list 2 :y) (list 3 :z))))
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(list (list :x :y :z)))
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(mk-test
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"pairlisto-different-lengths-fails"
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(run* q (pairlisto (list 1 2) (list :a :b :c) q))
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(list))
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(mk-tests-run!)
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