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A comment on Ask HN: What's the best tool you used to use that doesn't exist anymore?. Parent comment

Re:Ask HN: What's the best tool you used to use that doesn't... by bhouston on Saturday May 14, 2016 @05:02AM (#11695197)
The issue is the callback, it introduces significant overhead because it is a new context with its own scope on a per callback basis.
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Re:Ask HN: What's the best tool you used to use that doesn't... by dclowd9901 on Saturday May 14, 2016 @12:37PM (#11696857)
Yes, exactly. I suppose if you registered the callback as a named function expression, a good js engine might be able to optimize on it and inline it, but I also don't like leaning on compilers so much.
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