Github user concretevitamin commented on the pull request:
https://github.com/apache/spark/pull/1359#issuecomment-48642397
Hey @willb - thanks for working on this, which is going to be very useful
for Spark SQL. I left a couple minor comments. Another general concern is the
performance of `eval()`. If there are ways to reduce branchings, or reduce the
function call (not sure if @inline will help), we should probably do it.
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