Rosetta Code

Singly-linked list/Element definition: Difference between revisions

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m →‎{{header|JavaScript}}: improvements to assist inheritance
m →‎{{header|Ruby}}: update code
Line 421:
=={{header|Ruby}}==
 
<lang ruby> class ListNode
attr_accessor :value, :succ
 
def initialize(vvalue,s succ=nil)
self.value=v▼
self.succvalue =s value
▲ self.valuesucc =v succ
end▼
 
def each(&b)
yield valueself▼
succ.each(&b) if succ▼
end</lang>▼
 
include Enumerable▼
 
def self.from_array(ary)
head = self.new(ary[0], nil)
prev = head
ary[1..-1].each do |val|
node = self.new(val, nil)
prev.succ = node
prev = node
end
def each(&b)head
end
▲ yield value
end
▲ succ.each(&b) if succ
 
▲ end
list = ListNode.from_array([1,2,3,4])</lang>
▲ include Enumerable
▲ end</lang>
 
=={{header|Scheme}}==
Retrieved from "https://rosettacode.org/wiki/Singly-linked_list/Element_definition"