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}\n+\n+    return 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I didn't try concatenation.","created_at":"2015-07-06T18:38:50Z","updated_at":"2015-07-06T18:38:50Z","html_url":"https://github.com/uber/tchannel/pull/855#discussion_r33967479","pull_request_url":"https://api.github.com/repos/uber/tchannel/pulls/855","_links":{"self":{"href":"https://api.github.com/repos/uber/tchannel/pulls/comments/33967479"},"html":{"href":"https://github.com/uber/tchannel/pull/855#discussion_r33967479"},"pull_request":{"href":"https://api.github.com/repos/uber/tchannel/pulls/855"}}},"pull_request":{"url":"https://api.github.com/repos/uber/tchannel/pulls/855","id":39295478,"html_url":"https://github.com/uber/tchannel/pull/855","diff_url":"https://github.com/uber/tchannel/pull/855.diff","patch_url":"https://github.com/uber/tchannel/pull/855.patch","issue_url":"https://api.github.com/repos/uber/tchannel/issues/855","number":855,"state":"open","locked":false,"title":"Improve performance of 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