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Re^3: Regarding the new \w regexp escape in 5.11

by demerphq (Chancellor)
on Oct 06, 2009 at 09:54 UTC ( #799419=note: print w/replies, xml ) Need Help??

in reply to Re^2: Regarding the new \w regexp escape in 5.11
in thread Regarding the new \w regexp escape in 5.11

Im wondering if you somehow dropped a "not" in your first parenthetical remark.

The fundamental problem here is that \w and behaves different if the string is utf8 or not. We want to make it so \w does the same thing regardless. That means that we end up breaking someones code. I really dont want to have to support three modes, one for the current broken behaviour, one for utf8 and one for ascii. I would much rather just support one mode, and have it be able to cover all the bases. Whether this is feasable or not going forward isnt clear.

Feel free to provide more details on how these issues are tackled in other languages.


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[Corion]: Meh. SQL window functions would even make pagination easy/trivial (but not performant), as rank() over (partition by user order by timestamp) / 10 as page would give me a page number for each item, with 10 items per page.
[Corion]: Of course, the query performance for "all items on page 10" is likely worse than rank() between 100 and 109 , but if that means I can write 15 lines of SQL instead of needing to think about how to partition things and how to encode the page size...

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