CurryInfo: base-3.4.0 / Data.List.union
definition: 
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union :: Eq a => [a] -> [a] -> [a]
union [] ys = ys
union (x:xs) ys = if x `elem` ys then union xs ys
else x : union xs ys
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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. |
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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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union |
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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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Prelude.Eq a => [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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yes |
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totally-defined:
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reducible on all ground data terms |