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Remarks

Just run it with no argument:

ruby entry.rb

I confirmed the following implementations/platforms:

  • ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-linux]
  • ruby 2.1.7p400 (2015-08-18 revision 51632) [x86_64-linux]
  • ruby 2.0.0p645 (2015-08-18 revision 51630) [x86_64-linux]

Description

This is the real meta programming.

Internals

I don't want to write long code, then I compressed the code a little.

Limitation

None

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