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janlelis/capture_output.rb

Created September 30, 2016 09:16
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capture_output.rb
require "stringio"
def capture_stdout
capture = StringIO.new
restore, $stdout = $stdout, capture
yield
$stdout = restore
capture.string
end
def capture_stderr
capture = StringIO.new
restore, $stderr = $stderr, capture
yield
$stderr = restore
capture.string
end
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