Frozen symbols

Ruby code posted
created at 08 Oct 22:52

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irb(main):001:0> :foo
=> :foo
irb(main):002:0> :foo.frozen?
=> false
irb(main):003:0> :foo.freeze
=> :foo
irb(main):004:0> :foo.frozen?
=> true
irb(main):005:0>
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