a nested loop might be a concrete case where `O(n)` happens ... not so common with strings but quite possibly used in many parsers implemented in JS itself.
On Sat, Oct 19, 2013 at 12:11 PM, Brendan Eich <[email protected]> wrote: > Allen Wirfs-Brock wrote: > >> The use case that we don't support well is any sort of back wards >> iteration of the characters of a string. We don't current have an iterator >> specified to do it, nor do we have a one stop way to test whether we at >> looking at the trailing surrogate of a surrogate pair. >> > > What do you mean by "one stop"? O(1)? We aren't going to mandate > implementations make such tests (or backward iteration) that cheap. > > Is there yet a real world (from the field, not a testcase) use-case for > backward iteration? > > /be > > ______________________________**_________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/**listinfo/es-discuss<https://mail.mozilla.org/listinfo/es-discuss> >
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