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reednj/is_a!.rb

Created April 1, 2016 02:30
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is_a! extension method for ruby
Raw
is_a!.rb
class Object
def is_a!(t, name = nil)
if !is_a? t
if name.nil?
raise "expected #{t} but got #{self.class}"
else
raise "#{name} requires #{t} but got #{self.class}"
end
end
end
end
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