Class: OrElse::Just

Inherits:
Maybe show all
Defined in:
lib/or_else/just.rb

Instance Method Summary collapse

Methods inherited from Maybe

sequence

Constructor Details

#initialize(val) ⇒ Just

Returns a new instance of Just.



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# File 'lib/or_else/just.rb', line 3

def initialize(val)
  @value = val
end

Instance Method Details

#all? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/or_else/just.rb', line 40

def all?
  !!(yield value)
end

#any?(&block) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/or_else/just.rb', line 44

def any?(&block)
  all?(&block)
end

#each {|value| ... } ⇒ Object

Yields:

  • (value) 


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# File 'lib/or_else/just.rb', line 35

def each
  yield value
  nil
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/or_else/just.rb', line 19

def empty?
  false
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/or_else/just.rb', line 23

def exists?
  !empty?
end

#filter ⇒ Object 



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# File 'lib/or_else/just.rb', line 15

def filter
  (yield value) ? self : Nothing
end

#flat_map ⇒ Object 



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# File 'lib/or_else/just.rb', line 11

def flat_map
  Maybe(yield value)
end

#map ⇒ Object 



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# File 'lib/or_else/just.rb', line 7

def map
  Just(yield value)
end

#or_else ⇒ Object 



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# File 'lib/or_else/just.rb', line 31

def or_else
  value
end

#present? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/or_else/just.rb', line 27

def present?
  exists?
end