Portability | unportable |
---|---|
Stability | unstable |
Maintainer | andrea.rossato@unibz.it |
Safe Haskell | None |
A data type to store the layout state
Usage:
A wrapper data type to store layout state that shouldn't be persisted across
restarts. A common wrapped type to use is Maybe a
.
Invisible derives trivial definitions for Read and Show, so the wrapped data
type need not do so.
I (m a) |
fromIMaybe :: a -> Invisible Maybe a -> aSource