Quantum.Random.Exceptions

Provides a data type describing the parsing errors that are possible, though unlikely, to be encountered.

Note that since network requests are handled by the http-conduit package, the corresponding HttpException is also one a user may wish to handle.

Usually to be imported via the Quantum.Random module.

QRN exception data type

data QRException

Represents two possible error conditions that may be encountered: in interpreting data retrived from ANU, or while reading the local settings file.

Constructors

ParseResponseError String

ParseSettingsError String

Instances

Show QRException

Methods

showsPrec :: Int -> QRException -> ShowS

show :: QRException -> String

showList :: [QRException] -> ShowS

Exception QRException

Methods

toException :: QRException -> SomeException

fromException :: SomeException -> Maybe QRException

displayException :: QRException -> String

Throwing

throwLeft :: Exception e => IO (Either e a) -> IO a

Perform an IO computation that might encounter a problem corresponding to a Exception. If so, throw the exception, if not just return the value.