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@pocke pocke/sum1.rb
Last active Apr 30, 2019

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For akaza blog
require 'akaza'
class A
extend Akaza::Annotation
whitespace def sum(input, output)
This code is never evaluated.
So you can write any
sentences as comments!
end
end
a = A.new
input = StringIO.new("20\n22\n")
output = StringIO.new
a.sum(input, output)
p output.string # => "42"
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