Lookup a key in an assoc list
elm-package install tryzniak/assoc 1.0.0
Lookup a key in an assoc list
namesByAges = [("Mary", 30), ("John", 20), ("Ivan", 18), ("John", 100)]
lookup "John" namesByAges == Just 20
lookupAll "John" namesByAges == [20, 100]
lookup "Pete" namesByAges == Nothing
lookupAll "Pete" namesByAges == []To run tests use elm-test
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