Tried to dereference an empty maybe
Prelude::CantDerefNothing( )
If Prelude.deref (3kaya) is called on a Prelude.Maybe (3kaya) equal to nothing this Exception will be thrown. Generally it is better to use a case statement if this is likely.
Kaya standard library by Edwin Brady, Chris Morris and others ([email protected]). For further information see http://kayalang.org/
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.
Prelude.deref (3kaya)