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> The greatest trick that javascript ever pulled was to convince the latest generation of programmers that it was fast... By the way, JavaScript IS quite fast.
by auggierose 4y ago
> The greatest trick that javascript ever pulled was to convince the latest generation of programmers that it was fast...
By the way, JavaScript IS quite fast. I ported some code from Swift to Typescript recently, and its runtime went down from 15 seconds to 2 seconds. It wasn't a 1-1 port because I improved things, so it is not a fair comparison, but I was very positively surprised.
- mattmanser 4y ago> It wasn't a 1-1 port because I improved things Hmm, I think we found the reason....
- auggierose 4y agoI don't think you did! Doing the same improvements in Swift I wouldn't expect an over seven time speedup. I suspect that the time difference has to do with data structures like hashmaps, which in Swift are defacto immutable, and in JavaScript are not.