I've been using R nonstop for pretty much 5+ years. I'm happy that there's established competition coming from Python and new competition coming from Julia. Having these languages compete over similar types of programmers pushes each one to be better, which is awesome. I'm not a die-hard R person, I'd be more than happy to switch under the right circumstances. But...I think one thing gets overlooked way too often. Fo…
It's so much simpler and faster to use a loop that says "pick this row only if this and that and this other thing are sometimes true" vs having to construct an algebra of column filters to do the same.