So for the record, java.util.HashMap is startlingly faster than Scala's mutable.Map. I'm not actually sure why one would use the latter.
I'm too lazy to check, but doesn't it construct an Option for each lookup? Also N.B. hashcode calcs may dominate for some types.
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I dunno off hand. It’s bad whatever it is. Also the point on hash codes is a good one, but I already circumvented with a wrapper
Thanks. Twitter will use this to make your timeline better. UndoUndo
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