maybe

Correct implementation of the Maybe monad in JavaScript

Installation

Install with component(1):

$ component install jasonkuhrt/maybe

Install with npm(1)

$ npm install jasonkuhrt/maybe

API

Constructor

Maybe

(a) -> Maybe a

==========

Instance methods

.bind()

(a -> b) -> Maybe b

Passed function is automatically lifted.

.{package_function}()

All package functions are partially applied with the monadic-value and exposed as properties on the Maybe a value. e.g.:

var some_unstable_value = Maybe(null);

// Pure style
Maybe.is_nothing(some_unstable_value)  // true

// Chain style
some_unstable_value.is_nothing()       // true

==========

Package Functions {...}

maybe

(else_value, (a -> b), Maybe a) -> b

is_nothing

(Maybe a) -> Bool

is_just

(Maybe a) -> Bool

from_just

(Maybe a) -> Bool

from_maybe

(else_value, Maybe a) -> a

License

BSD-2-Clause