Github user pwendell commented on the pull request: https://github.com/apache/spark/pull/332#issuecomment-39656418 My thought is - if it's only a matter of saving us from having to write 10 `if` statements (which I don't think have changed or been modified in several years), it might not be worth having an extra dependency to track. I'm guessing these if statements get optimized at runtime to the point where they are very cheap.
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