Maybe: Maybe monad implementation.

In schnecki/rhaskell: R-Haskell

Maybe monad implementation.

Description

Maybe monad implementation.

Maybe monad implementation.

Super classes

rhaskell::Functor -> rhaskell::Applicative -> rhaskell::Monad -> Maybe

Methods

Public methods

• Maybe$new()

• Maybe$fmap()

• Maybe$pure()

• Maybe$apply()

• Maybe$empty()

• Maybe$alt()

• Maybe$bind()

• Maybe$fromJust()

• Maybe$fromMaybe()

• Maybe$maybe()

• Maybe$clone()

Inherited methods

---

Method new()

Usage

Maybe$new(mValue = NULL)

Arguments

mValue

value.

Return the value. Fails if the encapsulated value is NULL! Better use fromMaybe!

isJust :: Maybe a (=self) -> a Unwrap the value with a default.

---

Method fmap()

Usage

Maybe$fmap(fun)

---

Method pure()

Usage

Maybe$pure(x)

---

Method apply()

Usage

Maybe$apply(x)

---

Method empty()

Usage

Maybe$empty()

---

Method alt()

Usage

Maybe$alt(other)

---

Method bind()

Usage

Maybe$bind(fun)

---

Method fromJust()

Usage

Maybe$fromJust()

---

Method fromMaybe()

Usage

Maybe$fromMaybe(def)

Arguments

def

default value

fromMaybe :: a -> Maybe a (=self) -> a Unwrap a maybe with default value and a function to apply.

---

Method maybe()

Usage

Maybe$maybe(def, f)

Arguments

def

default value

f

function to apply in case of Just() value

maybe :: a -> (a -> b) -> Maybe a (=self) -> a Check if a Maybe is of type Just.

isJust :: Maybe a (=self) -> Bool Check if a Maybe is of type Nothing.

isJust :: Maybe a (=self) -> Bool

---

Method clone()

The objects of this class are cloneable with this method.

Usage

Maybe$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

schnecki/rhaskell documentation built on Oct. 30, 2022, 10:23 a.m.