Are there a formal or more complete definition for fast-profile than this one? http://dev.w3.org/csswg/selectors-4/#profiles what is "fast"? - - - - Some blogs and discussions try to explain what is "slow" in the fast-profile concept... I learned from a blog <http://snook.ca/archives/html_and_css/css-parent-selectors>, and now, personaly I understand that the "fast-profile" is the hypothesis of use an "online algorithm" https://en.wikipedia.org/wiki/Online_algorithm so, in XML terms, the fas-side is a good analog of the SAX-side in the "SAX vs DOM" dicotomy. In the fast-profile the document is traversed once, matching elements as the online-algorithm go... Ok, but it is strictly online, like in a streaming problem, or... we can suppose some pre-parse for know all IDs? can suppose "memory of IDs of all parsed above"? "memory of all classes above"? ... other suppositions? what the real and complete scenario of a CSS-parser in the fast-profile? - - - - PS: it is a "benchmark game" with black-boxes (the future) or white-boxes (the present)? The *near-future* of CSS parsers is a gray-box... It's fine: let's put some rules in this game!Received on Sunday, 1 March 2015 06:04:59 UTC
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