NAME

       Prelude::Maybe - Optional values.

SYNOPSIS

       Prelude::Maybe< a >

     = nothing()

     | just(a val)

DESCRIPTION

       A  value  is either of type a , represented as just(a) , or empty. Maybe is often useful for computations
       which can possibly fail, for example looking up values in a dictionary. Because the nothing value can  be
       stored, this is often more useful than Exceptions on failure.

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.deref (3kaya)
       Dict.lookup (3kaya)

Kaya                                                July 2013                               Prelude.Maybe(3kaya)