yxhuvud

irb(main):001:0> class A
irb(main):002:1> def foo
irb(main):003:2> puts 'foo'
irb(main):004:2> end
irb(main):005:1> def foo= bar
irb(main):006:2> puts 'bar'
irb(main):007:2> end
irb(main):008:1> end
=> nil
irb(main):009:0> x = A.new

yxhuvud

# -*- tab-width:4 -*-
def x():
    if 1:
        if 0:
            print "x 12 space"
	    print "x 1 tab plus 4 space"

# -*- tab-width:8 -*-
def y():
    if 1:

yxhuvud

class KnightTravails

  def initialize size=8
    @size = size
    @board = Array.new(@size) { Array.new(@size)}
  end

  def knight_path start_node, end_node, forbidden_nodes
    mark_forbidden forbidden_nodes
    path = breadth_first_search start_node, end_node