CurryInfo: ertools-3.0.0 / Database.ERD.Generic.duplicateKeyTest
definition: 
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duplicateKeyTest :: (Key -> t -> Dynamic) -> Transaction ()
duplicateKeyTest pred =
getDB (allDBKeys pred) |>>= \keys ->
if length (nub keys) == length keys
then doneT
else errorT (TError DuplicateKeyError
("database contains duplicate key for table: "
{- ++show pred-}))
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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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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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duplicateKeyTest |
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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.Int -> a -> Database.KeyDatabaseSQLite.Dynamic) -> Database.KeyDatabaseSQLite.Transaction () |
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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 |