CurryInfo: base-3.4.0 / Control.Search.SearchTree.isDefined
definition: 
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isDefined :: a -> Bool
isDefined x = hasValue (someSearchTree x)
where hasValue y = case y of Value _ -> True
Fail _ -> False
Or t1 t2 -> hasValue t1 || hasValue t2
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demand:
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no demanded arguments |
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deterministic:
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deterministic operation |
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documentation:
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Returns True iff the argument is defined, i.e., has a value. |
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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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isDefined |
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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 -> Prelude.Bool |
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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 |