RuleCondition vs Condition
- To: mathgroup at smc.vnet.net
- Subject: [mg42983] RuleCondition vs Condition
- From: Andrzej Kozlowski <andrzej at platon.c.u-tokyo.ac.jp>
- Date: Thu, 7 Aug 2003 00:53:40 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On Wednesday, August 6, 2003, at 09:16 AM, Andrzej Kozlowski wrote: > This is, of course, the key to the difference between Condition and > RuleCondition: they both hold their first argument but the pattern > matcher parses it quite differently. This is in fact wrong. The difference between Condition and RuleCondition is not due to "parsing" but mainly due to the fact that : Condition[x,True] x/;True RuleCondition[x,True] x I feel that RuleConditon ought to be a documented function since it can be very useful in many cases where Condition is hard to use precisely because of the above property. Andrzej Kozlowski Yokohama, Japan http://www.mimuw.edu.pl/~akoz/ http://platon.c.u-tokyo.ac.jp/andrzej/