úβiSafe Analogous to  , but for  over . A variant of C where the return value from the first computation is not required.  'errors-ext-0.1.3-KNXI4RiNXQw3fEGmPV1mm2Control.Error.ExtensionsbracketE bracketE_baseControl.Exception.Basebrackettransformers-0.5.2.0Control.Monad.Trans.ExceptExceptTghc-prim GHC.TypesIO