carldr.com

# Ruby and Unicode

Nope, not the usual boring text encoding stuff, but this :

#!ruby -Ku
module Kernel
  def ∑( *args )  #  Sum of
    args.inject( 0 ) { |i, j| i += j }
  end
  def √( number ) #  Root of
    Math.sqrt( number )
  end
end
puts √(49)
puts ∑(1,2,3,4,5)

Seriously cool. Idea stolen from here.