CurryInfo: base-3.4.0 / Prelude.head
definition: 
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head :: [a] -> a head (x:_) = x |
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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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Computes the first element of a list. |
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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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head |
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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 |
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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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possibly non-reducible on same data term |