Github user aljoscha commented on the pull request: https://github.com/apache/flink/pull/1175#issuecomment-142943745 I don't favor a particular style, I just think consistency is key here. The google style guide, for example allows single char (T, E, K) and camel case with an affixed T, i.e. ResultT, KeyT, and so on. I'll adapt your code while finishing the windowing stuff based on what we decide.
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