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pietromoro/enum.rb

Last active July 30, 2020 13:27
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Quick ruby enum
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enum.rb
module Kernel
def enum(values)
Module.new do |mod|
values.each_with_index{ |v,i| mod.const_set(v.to_s.capitalize, 2**i) }
def mod.inspect
"#{self.name} {#{self.constants.join(', ')}}"
end
end
end
end
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pietromoro commented Jul 30, 2020

Usage

State = enum %w(CONNECT CONNECTING DISCONNECT)
# => State{CONNECT, CONNECTING, DISCONNECT}

State::CONNECT
# => 1

State::CONNECT | Sate::CONNECTING
# => 3

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