Class: DS::ListElement

Inherits:
Object
  • Object
show all
Defined in:
lib/ds/lists/list_element.rb

Overview

Container for linked lists elements.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x = nil) ⇒ ListElement

Returns a new instance of ListElement.



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# File 'lib/ds/lists/list_element.rb', line 8

def initialize(x=nil)
  @data = x
  @next= nil
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/ds/lists/list_element.rb', line 6

def data
  @data
end

#next ⇒ Object

Returns the value of attribute next.



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# File 'lib/ds/lists/list_element.rb', line 6

def next
  @next
end

Instance Method Details

#append(x) ⇒ Object

Adds new element to list.



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# File 'lib/ds/lists/list_element.rb', line 14

def append(x)
  elem = ListElement.new(x)
  self.next = elem
end

#tail? ⇒ Boolean

Checks if given element is last.

Returns:

  • (Boolean) 


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# File 'lib/ds/lists/list_element.rb', line 20

def tail?
  @next.nil?
end