Most overlooked feature of React: Prevalent use of named arguments. It's surprisingly inefficient/cumbersome in JS despite being ubiquitous.
if the function in question got hot (and inlined a lot), this can result in a a huge amount of deopt-recompile. Sad. :(
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Interesting. I wish I had the problem of functions being too hot. Not called often enough. More concerned about pre-opt perf.
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Ember has the problem in our rendering loop. It gets hot, hot, hot and then BOOM: some dict is GCed and fluuuush.
End of conversation
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