Class: Datr::Stack

Inherits:

Object

• Object
• Datr::Stack

Defined in:

lib/datr/stack.rb

Instance Method Summary

• #empty? ⇒ Boolean
• #initialize ⇒ Stack constructor

  A new instance of Stack.

• #pop ⇒ Object
• #push(elem) ⇒ Object
• #size ⇒ Object
• #top ⇒ Object

Constructor Details

#initialize ⇒ Stack

Returns a new instance of Stack.

# File 'lib/datr/stack.rb', line 5

def initialize
  @elements = []
end

Instance Method Details

#empty? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/datr/stack.rb', line 21

def empty?
  @elements.empty?
end

#pop ⇒ Object

# File 'lib/datr/stack.rb', line 13

def pop
  @elements.delete_at(@elements.size - 1)
end

#push(elem) ⇒ Object

# File 'lib/datr/stack.rb', line 9

def push elem
  @elements << elem
end

#size ⇒ Object

# File 'lib/datr/stack.rb', line 25

def size
  @elements.size
end

#top ⇒ Object

# File 'lib/datr/stack.rb', line 17

def top
  @elements.last
end