jugyo
/ request_logger.rb
Last active
November 16, 2023 17:25
Rack middleware for logging all rails request
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| # Add below into config/application.rb: | |
| # | |
| # config.middleware.use 'RequestLogger' | |
| # | |
| class RequestLogger | |
| def initialize app | |
| @app = app | |
| end | |
| def call(env) |
albertstill
/ enigma_machine.rb
Last active
February 25, 2021 18:46
Understand how the Enigma machine works with 30 lines of Ruby
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| Plugboard = Hash[*('A'..'Z').to_a.sample(20)] | |
| Plugboard.merge!(Plugboard.invert) | |
| Plugboard.default_proc = proc { |_, key| key } | |
| def build_a_rotor | |
| Hash[('A'..'Z').zip(('A'..'Z').to_a.shuffle)] | |
| end | |
| ROTOR_1, ROTOR_2, ROTOR_3 = build_a_rotor, build_a_rotor, build_a_rotor |