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oneamtu/gist:99106fa4ee856878ad10

Created March 12, 2015 20:33
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gistfile1.rb
def mapper(a)
b = a.map! { |x| x.nil? }
end
c = [nil]
expect(mapper(c)).to eq([true]) # => true
expect(mapper(c)).to eq([true]) # => false
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