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Re:Why I am betting on Julia (2014) by eva1984 on Monday April 18, 2016 @09:06PM (#11524238)
That is exactly the reason if you are looking for performance you should use slot.
Re:Why I am betting on Julia (2014) by ihnorton on Monday April 18, 2016 @10:04PM (#11524442)
Slots are still mutable, so they don't help with most of those concerns.

(also: http://lucumr.pocoo.org/2014/8/16/the-python-i-would-like-to...)