Class: Literal::NothingClass

Inherits:
Maybe show all
Defined in:
lib/literal/nothing_class.rb

Overview

Note:

This class is not meant to be instantiated. You should use the Literal::Nothing instance.

Instance Method Summary collapse

Methods inherited from Maybe

#call

Methods inherited from Monad

#handle

Constructor Details

#initialize ⇒ NothingClass

Returns a new instance of NothingClass.



5
6
7
 
# File 'lib/literal/nothing_class.rb', line 5

def initialize
	freeze
end

Instance Method Details

#===(value) ⇒ Object 



38
39
40
 
# File 'lib/literal/nothing_class.rb', line 38

def ===(value)
	self == value
end

#bind ⇒ Literal::Nothing

Returns:



36
 
# File 'lib/literal/nothing_class.rb', line 36

def bind = self

#deconstruct ⇒ Object 



42
43
44
 
# File 'lib/literal/nothing_class.rb', line 42

def deconstruct
	[]
end

#deconstruct_keys(_) ⇒ Object 



46
47
48
 
# File 'lib/literal/nothing_class.rb', line 46

def deconstruct_keys(_)
	{}
end

#empty? ⇒ true

Returns:

  • (true) 


13
 
# File 'lib/literal/nothing_class.rb', line 13

def empty? = true

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


50
51
52
 
# File 'lib/literal/nothing_class.rb', line 50

def eql?(other)
	Literal::Nothing == other
end

#filter ⇒ Literal::Nothing

Returns:



24
 
# File 'lib/literal/nothing_class.rb', line 24

def filter = self

#fmap ⇒ Literal::Nothing

Returns:



33
 
# File 'lib/literal/nothing_class.rb', line 33

def fmap = self

#inspect ⇒ String

Returns:

  • (String) 


10
 
# File 'lib/literal/nothing_class.rb', line 10

def inspect = "Literal::Nothing"

#map(type = nil) ⇒ Literal::Nothing

Returns:



27
 
# File 'lib/literal/nothing_class.rb', line 27

def map(type = nil) = self

#nothing? ⇒ true

Returns:

  • (true) 


16
 
# File 'lib/literal/nothing_class.rb', line 16

def nothing? = true

#something? ⇒ false

Returns:

  • (false) 


19
 
# File 'lib/literal/nothing_class.rb', line 19

def something? = false

#then(type = nil) ⇒ Literal::Nothing

Returns:



30
 
# File 'lib/literal/nothing_class.rb', line 30

def then(type = nil) = self

#value_or ⇒ Object 



21
 
# File 'lib/literal/nothing_class.rb', line 21

def value_or = yield