- From: Michael Dyck <jmdyck@ibiblio.org>
- Date: Mon, 16 Dec 2002 00:34:05 -0800
- To: public-qt-comments@w3.org
XQuery 1.0: An XML Query Language W3C Working Draft 15 November 2002 A.4 Precedence Order "In the cases where a number of statements are a choice at the same production level, the expressions are always evaluated from left to right." Presumably, "statements" should be "expressions". The phrase "a choice at the same production level" is somewhat vague. And the order in which the *expressions* are evaluated is immaterial. For example, in the AdditiveExpr A - B - C, the order in which you evaluate A, B, and C doesn't matter; what matters is the order in which you evaluate the subtractions. Here's something that adresses these points, and comes closer to using standard terminology: When a production directly derives a sequence of expressions separated by binary operators, the operators are evaluated from left to right. In any event, an example might help. -Michael Dyck
Received on Monday, 16 December 2002 03:41:23 UTC