CurryInfo: base-3.4.0 / Data.Either.isLeft
definition: 
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isLeft :: Either a b -> Bool isLeft (Left _) = True isLeft (Right _) = False |
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demand:
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argument 1 |
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deterministic:
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deterministic operation |
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documentation:
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Return `True` if the given value is a `Left`-value, `False` otherwise. |
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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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{({Left}) |-> {True} || ({Right}) |-> {False}}
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name:
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isLeft |
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precedence:
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no precedence defined |
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result-values:
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{False,True}
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signature:
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Prelude.Either a b -> Prelude.Bool |
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solution-complete:
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operationally complete operation |
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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 |