Re: Enforce a constant in a class.

2010/1/22 Ashley Sheridan <ash@ashleysheridan.co.uk> > Constants are there for things that should never change. If you ever need to change them, then > whoever created the base class either didn't think things through properly, or you're not. > Imagine  a class that sets the value of π (as is the erstwhile example for constants) If further > classes that implemented it were of a particular historical persuasion, then they might want to > redefine the constant as just 3. It seemed like a good idea to the historical Roman Catholics at the > time (it was defined as 3 in the Bible after all) but it doesn't make it the correct value > (imagine the problems with volume calculations!) > > Constants are so called for a good reason! And in the class that I want to enforce the presence of the constant, it will be constant. I just want to enforce the presence. -- ----- Richard Quadling "Standing on the shoulders of some very clever giants!" EE : http://www.experts-exchange.com/M_248814.html EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 ZOPA : http://uk.zopa.com/member/RQuadling