Mutable Strings in Ruby

mutable_string.rb

puts "Assign bob = \"bob\""

bob = "bob"

puts "bob_smith is also a bob"
puts "So bob_smith = bob (the variable reference)"

bob_smith = bob

puts "We want to capitalize bob so : bob.capitalize!"

bob.capitalize!

puts "No surprise for bob : #{bob}"

puts "But, is this a suprise to bob_smith? : #{bob_smith}"