Check and Off
- To: mathgroup at yoda.physics.unc.edu
- Subject: Check and Off
- From: Simon Chandler <simonc at hpcpbla.bri.hp.com>
- Date: Mon, 11 Jan 93 16:35:35 GMT
Dear MathGroupers, Mathematica: a System for Doing Mathematics by Computer (S.Wolfram 1991 Ed.2) seems inconsistent in its explanation of how Check and Off work together. In section A.8 (Listing of Mathematica Objects) the description for Off states "Switching off the printing of a messsage does not affect its detection by Check". This behaviour is also described in Mathematica Quick Reference Version 2 (N.Blachman 1992). In contrast, in the main text of Mathematica: a System for Doing Mathematics (section 2.8, p.389) the following is stated. "Check[expr, failexpr] tests for all messsages that are actually printed out. It does not test for messages whose output has been suppressed using Off". Am I missing something here ? I would like to have the first behaviour. Can I force this ? Thanks, Simon Chandler Hewlett-Packard Ltd (CPB) Filton Road Stoke Gifford Bristol BS12 6QZ U.K. Tel: 0272 228109 Fax: 0272 236091 email: simonc%hpcpbla.bri.hp.com at hplb.hpl.hp.com