CurryInfo: base-3.4.0 / Data.List.unionBy
definition: 
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unionBy :: (a -> a -> Bool) -> [a] -> [a] -> [a] unionBy eq xs ys = xs ++ foldl (flip (deleteBy eq)) (nubBy eq ys) xs |
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demand:
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argument 2 |
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deterministic:
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deterministic operation |
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documentation:
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Computes the union of two lists according to the given equivalence relation |
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failfree:
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(_, _, _) |
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indeterministic:
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referentially transparent operation |
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infix:
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no fixity defined |
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iotype:
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{(_,_,_) |-> _}
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name:
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unionBy |
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precedence:
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no precedence defined |
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result-values:
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_ |
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signature:
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(a -> a -> Prelude.Bool) -> [a] -> [a] -> [a] |
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solution-complete:
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operation might suspend on free variables |
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terminating:
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possibly non-terminating |
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totally-defined:
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reducible on all ground data terms |