Re:How to Fix Slow Code in Ruby
by saagarjha on Thursday May 14, 2020 @02:45PM
(#23183641)
People used to think JavaScript was too dynamic to optimize, too. Then people poured time and effort into it and now good JavaScript virtual machines can hold their own against competing implementations for other languages.
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...While still not being multicore. I feel that those efforts you mention don't go far enough.
And I am pretty sure backwards compatibility will continue dragging JS down for quite a long time still as well.
Surely they are, via workers and worklets.