Class: List

Inherits:
Object
  • Object
show all
Defined in:
lib/lib/list.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ List

Returns a new instance of List.



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# File 'lib/lib/list.rb', line 6

def initialize
  @length = 0
end

Instance Attribute Details

#length ⇒ Object

Returns the value of attribute length.



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# File 'lib/lib/list.rb', line 17

def length
  @length
end

Instance Method Details

#add(item) ⇒ Object 



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# File 'lib/lib/list.rb', line 19

def add(item)
  x = [item]
  if @h == nil 
    @h = x
  else 
    @q[1] = x
  end
  @q = x
  @length+=1
end

#iterator ⇒ Object 



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# File 'lib/lib/list.rb', line 30

def iterator 
  return { h: @h, has_next: lambda {
    return @h != nil
  }, _next: lambda {
    return nil if @h == nil
    x = @h[0]
    @h = @h[1]
    return x
  }}
end