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A comment on Show HN: Chrome Extension to Filter HN Stories by Keyword. Parent comment

Re:Show HN: Chrome Extension to Filter HN Stories by Keyword by nailer on Tuesday January 24, 2017 @10:30AM (#13472086)
Yeah, .forEach() is a new scope. But the better readability is worth the minor performance impact for everything but the most performance-intensive code.
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Re:Show HN: Chrome Extension to Filter HN Stories by Keyword by drenvuk on Wednesday January 25, 2017 @09:24PM (#13488209)
It's that kind of thinking that gets us really slow software.
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Re:Show HN: Chrome Extension to Filter HN Stories by Keyword by nailer on Thursday January 26, 2017 @07:29AM (#13490767)
"premature optimization is the root of all evil" - Don Knuth

Also old-style for loops in JS fall victim to the last entry effect since people often use them to set up event handlers and wonder why they don't work.

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