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Within LTS Haskell 24.51 (ghc-9.10.3)

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  1. readIORef :: MonadConc m => IORef m a -> m a

    concurrency Control.Monad.Conc.Class

    Read the current value stored in a reference. 

    readIORef ioref = readForCAS ioref >>= peekTicket

  2. readMVar :: MonadConc m => MVar m a -> m a

    concurrency Control.Monad.Conc.Class

    Block until a value is present in the MVar, and then return it. This does not "remove" the value, multiple reads are possible.

  3. readTVarConc :: MonadConc m => TVar (STM m) a -> m a

    concurrency Control.Monad.Conc.Class

    Read the current value stored in a TVar. This may be implemented differently for speed. 

    readTVarConc = atomically . readTVar

  4. readTVar :: MonadSTM stm => TVar stm a -> stm a

    concurrency Control.Monad.STM.Class

    Return the current value stored in a TVar.

  5. readable :: (Read a, Typeable a) => Text -> Either String a

    config-ini Data.Ini.Config

    Try to use the Read instance for a type to parse a value, failing with a human-readable error message if reading fails. 

    >>> readable "(5, 7)" :: Either String (Int, Int)
Right (5,7)

>>> readable "hello" :: Either String (Int, Int)
Left "Unable to parse \"hello\" as a value of type (Int,Int)"

  6. readable :: (Show a, Read a, Typeable a) => FieldValue a

    config-ini Data.Ini.Config.Bidir

    A FieldValue for parsing and serializing values according to the logic of the Read and Show instances for that type, providing a convenient human-readable error message if the parsing step fails.

  7. readURef :: (PrimMonad m, Unbox a) => URef (PrimState m) a -> m a

    data-sketches-core DataSketches.Core.Internal.URef

    Read the value in a URef

  8. ready :: ReadyTarget a -> a

    debian Debian.GenBuildDeps

    Some target whose build dependencies are all satisfied

  9. readyTargets :: BuildableInfo a -> [ReadyTarget a]

    debian Debian.GenBuildDeps

    No documentation available.

  10. readURI' :: String -> Maybe URI'

    debian Debian.URI

    No documentation available.

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