Class: Util::FnStack

Inherits:
Object
  • Object
show all
Defined in:
lib/ruff/standard/util.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ FnStack

Returns a new instance of FnStack.



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# File 'lib/ruff/standard/util.rb', line 6

def initialize
  @queue = []
end

Instance Method Details

#cons(hd) ⇒ Object 



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# File 'lib/ruff/standard/util.rb', line 19

def cons(hd)
  queue_ = @queue.dup
  queue_.push hd
end

#dequeue ⇒ Object 



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# File 'lib/ruff/standard/util.rb', line 14

def dequeue
  hd = @queue.pop
  hd[] unless hd.nil?
end

#enqueue(fn) ⇒ Object 



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# File 'lib/ruff/standard/util.rb', line 10

def enqueue(fn)
  @queue.push fn
end