exceptional

Version 0.1.4.2 revision 0 uploaded 2015-05-16T15:54:51.000Z by pharpend.

Package meta

Synopsis

Essentially the Maybe type with error messages.

Description

This is a very simple type:

data Exceptional x
  = Failure String
  | Success x

It's much like Maybe, except instead of Nothing, we have Failure String.

A comparison could also be made to Either String. I made this library because I was dissatisfied with the Monad instance for Either. In this type, fail = Failure. It's rather simple.

Author

Peter Harpending

Bug reports

https://github.com/pharpend/exceptional/issues

Category

Control

Copyright

Copyright (c) 2015, Peter Harpending.

Homepage

https://github.com/pharpend/exceptional

Maintainer

peter@harpending.org

Package URL

n/a

Stability

n/a

Components

• lib:exceptional