Class: Fear::Left

Inherits:
Object
  • Object
show all
Includes:
Either
Defined in:
lib/fear/left.rb

Instance Method Summary collapse

Methods included from Either

#any?, #each, #flat_map, #get_or_else, #include?, #initialize, #map, #to_a, #to_option

Instance Method Details

#join_left ⇒ Either

Returns:

Raises:

  • (TypeError) 


52
53
54
55
56
 
# File 'lib/fear/left.rb', line 52

def join_left
  value.tap do |v|
    Utils.assert_type!(v, Either)
  end
end

#join_right ⇒ self

Returns:

  • (self) 


46
47
48
 
# File 'lib/fear/left.rb', line 46

def join_right
  self
end

#left? ⇒ true Also known as: failure?

Returns:

  • (true) 


13
14
15
 
# File 'lib/fear/left.rb', line 13

def left?
  true
end

#reduce(reduce_left, _) ⇒ any

Parameters:

  • reduce_left (Proc)

Returns:

  • (any) 


41
42
43
 
# File 'lib/fear/left.rb', line 41

def reduce(reduce_left, _)
  reduce_left.call(value)
end

#reject ⇒ Left

Returns:



30
31
32
 
# File 'lib/fear/left.rb', line 30

def reject
  self
end

#right? ⇒ false Also known as: success?

Returns:

  • (false) 


7
8
9
 
# File 'lib/fear/left.rb', line 7

def right?
  false
end

#select ⇒ Left

Returns:



25
26
27
 
# File 'lib/fear/left.rb', line 25

def select
  self
end

#select_or_else(default) ⇒ Either

Parameters:

  • default (Proc, any)

Returns:



20
21
22
 
# File 'lib/fear/left.rb', line 20

def select_or_else(default)
  Left.new(Utils.return_or_call_proc(default))
end

#swap ⇒ Right

Returns value in ‘Right`.

Returns:

  • (Right) —

    value in ‘Right`



35
36
37
 
# File 'lib/fear/left.rb', line 35

def swap
  Right.new(value)
end