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SrdjanCoric/example1.rb

Created September 24, 2017 20:23
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example1.rb
a = 'hello'
puts a # -> hello
puts a.object_id # -> 70368527757720 (this number will be different for you)
a.upcase!
puts a # -> HELLO
puts a.object_id # -> 70368527757720 (this number will be the same as the one above)
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