remove a node from the beginning of a linked list in ruby

To remove a node from the beginning of a linked list in Ruby, you can follow these steps:

1. Set the head of the linked list to the next node of the current head.
2. Return the removed node.

Here is the code:

main.rb
def remove_head(list)
  if list.head
    node = list.head
    list.head = node.next
    return node
  else
    return nil
  end
end
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This code defines a method called remove_head that takes a linked list as an argument. If the linked list has a head node, the method removes it by setting the head to the next node and then returning the removed node. If there is no head node, the method returns nil.

You can use this method to remove the head node of any linked list in your Ruby code.