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Alex Rivera
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What is the slickest, most Ruby-like way to have a single constructor return an object of the appropriate type? To be more specific, here's a dummy example: say I have two classes Bike and Car which subclass Vehicle . I want this: Vehicle.new('mountain bike') # returns Bike.new('mountain bike') Vehicle.new('ferrari') # returns Car.new('ferrari') I've proposed a solution below, but it uses allocate which seems way too implementation-heavy. What are some other approaches, or is mine actually ok?
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