When using for-of on an array which still has its orig Symbol.iterator property, do modern JS engines really allocate an iterator obj, or just produce a tight efficient loop directly? (Assuming this is "hot" code selected for opt.) @mathias, do you happen to know? TIA all.
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Brill, thanks as always! Tucked that away for a thorough read this evening. :-)
Thanks. Twitter will use this to make your timeline better. UndoUndo
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JavaScript, HTML, CSS, HTTP, performance, security, Bash, Unicode, i18n, macOS.