| Portability | portable |
|---|---|
| Stability | provisional |
| Maintainer | John Goerzen <jgoerzen@complete.org> |
| Safe Haskell | None |
Data.Maybe.Utils
Description
Utilities for working with the Either data type
- forceMaybe :: Maybe a -> a
- forceMaybeMsg :: String -> Maybe a -> a
Documentation
forceMaybe :: Maybe a -> aSource
Pulls a Just value out of a Maybe value. If the Maybe value is Nothing, raises an exception with error.
forceMaybeMsg :: String -> Maybe a -> aSource
Like forceMaybe, but lets you customize the error message raised if
Nothing is supplied.