Class: Endless

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/tarpaulin/endless.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Endless

Returns a new instance of Endless.



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# File 'lib/tarpaulin/endless.rb', line 9

def initialize
  make_a_promise Lazy.promise &Proc.new
end

Instance Method Details

#each ⇒ Object 



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# File 'lib/tarpaulin/endless.rb', line 21

def each
  p = get_promise
  a = []
  while p
    car, cdr = p
    head_by_tail = car[1]
    a << head_by_tail
    yield head_by_tail
    p = cdr.get_promise
  end
  a
end

#get_promise ⇒ Object 



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# File 'lib/tarpaulin/endless.rb', line 17

def get_promise
  @p
end

#make_a_promise(p) ⇒ Object 



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# File 'lib/tarpaulin/endless.rb', line 13

def make_a_promise(p)
  @p = p
end

#map ⇒ Object 



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# File 'lib/tarpaulin/endless.rb', line 34

def map
  p = get_promise
  a = []
  while p
    car, cdr = p
    head_by_tail = car[1]
    a << (yield head_by_tail)
    p = cdr.get_promise
  end
  a
end