| definition: |
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-}))
|
| demand: |
no demanded arguments |
| deterministic: |
deterministic operation |
| failfree: |
_ |
| indeterministic: |
referentially transparent operation |
| infix: |
no fixity defined |
| iotype: |
{(_) |-> _}
|
| name: |
duplicateKeyTest |
| precedence: |
no precedence defined |
| result-values: |
_ |
| signature: |
(Prelude.Int -> a -> Database.KeyDatabaseSQLite.Dynamic) -> Database.KeyDatabaseSQLite.Transaction () |
| solution-complete: |
operation might suspend on free variables |
| terminating: |
possibly non-terminating |
| totally-defined: |
possibly non-reducible on same data term |