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definition:
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getOneSolution :: Data a => (a -> Bool) -> IO (Maybe a)
#ifdef __KICS2__
getOneSolution c = do
sols <- getAllSolutions c
return (if null sols then Nothing else Just (head sols))
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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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--- Gets one solution to a constraint (currently, via an incomplete
--- left-to-right strategy). Returns Nothing if the search space
--- is finitely failed.
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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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getOneSolution
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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.Data a => (a -> Prelude.Bool) -> Prelude.IO (Prelude.Maybe 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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possibly non-reducible on same data term
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