NAME¶

Prelude::deref - Dereference a Maybe.

SYNOPSIS¶

a deref( Maybe<a> v )

ARGUMENTS¶

v The value to dereference

DESCRIPTION¶

Extract the value from a Prelude.Maybe (3kaya)
An Exception is thrown if v is nothing
A case statemement is generally more appropriate unless it is known that the dereferencing should succeed (for example, using Dict.lookup (3kaya) on a key known to have been added). deref(x) is equivalent to x.val

AUTHORS¶

Kaya standard library by Edwin Brady, Chris Morris and others (kaya@kayalang.org). For further information see http://kayalang.org/

LICENSE¶

The Kaya standard library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License (version 2.1 or any later version) as published by the Free Software Foundation.

RELATED¶

Prelude.Maybe (3kaya) Prelude.CantDerefNothing (3kaya)