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class QuitCommand
def exectute
puts 'Goodbye'
end
end
class TweetCommand
def exectute
puts 'tweeting'
end
end
class DirectMessageCommand
def exectute
puts 'direct messaging'
end
end
class HelpCommand
def exectute
puts 'helping'
end
end
def process(input)
commands = {
'q' => GoodbyeCommand.new
'tweet' => TweetingCommand.new
'dm' => DirectMessageCommand.new
'help' => HelpingCommand.new
}
if command = commands[input]
command.execute
end
end
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