Replacing JavaScript Hot Path with WebAssembly

Re:Replacing JavaScript Hot Path with WebAssembly by z3t4 on Thursday February 14, 2019 @07:42PM (#19167550)

I would try optimizing the JS before dropping down to webassembly. For example try replacing let and const with var as let and const in loops have to create a new variable for each iteration.

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Re:Replacing JavaScript Hot Path with WebAssembly by Etheryte on Saturday February 16, 2019 @07:05AM (#19178247)

That's not how let and const work at all, where did you get that impression?

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Re:Replacing JavaScript Hot Path with WebAssembly by z3t4 on Saturday February 16, 2019 @02:20PM (#19180407)

Have you ever made a for loop using var only to have the variable point to the last value in the iteration ? And had to make a closure using forEach, function or self calling function ? With let you do not have to do that as a new variable is created for each iteration. Instead or reassigned when you use var.

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