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definition:
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readDatabaseKey :: String -> (Int -> enkey) -> String -> Maybe enkey
readDatabaseKey enname toenkey s =
let (ens,ks) = splitAt (length enname) s
in if ens==enname && all isDigit ks
then Just (toenkey (read ks))
else Nothing
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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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--- Transforms a string into a key for an entity name.
--- Nothing is returned if the string does not represent a reasonable key.
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failfree:
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<FAILING>
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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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{(_,_,_) |-> {Just,Nothing}}
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name:
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readDatabaseKey
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precedence:
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no precedence defined
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result-values:
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{Just,Nothing}
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signature:
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String -> (Prelude.Int -> a) -> String -> 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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