-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Chuck,
On 2/12/2009 10:27 PM, Caldarale, Charles R wrote: >> From: Christopher Schultz [mailto:ch...@christopherschultz.net] >> Subject: Re: [OT] of the different methods to get a user-id >> >> I don't understand that, either. I suppose this works differently in >> different languages, though: >> >> return i++; >> >> return (i++); > > Not any that I'm aware of; the value of the i++ expression is the same, > regardless of the number of parentheses you wrap it in. But sometimes the value is surprising. For instance. i = i++ yields different results depending on what language you are using. C and Java produce different outputs (which really surprised me!). >> What I also don't understand is why userPrincipal is used directly >> instead of this.getUserPrincipal, which would allow some measure of >> extensibility of the class. > > Since the userPrincipal field is protected, not private, the subclass > can just use it to store its Principal object, so I don't see a real > problem. I'm not saying it's not legal, I'm just saying it's not extensible. If a superclass wants to override getUserPrincipal for some reason, the subclass doesn't benefit (or doesn't work, in certain situations). Thsi is one of the reasons I hate using protected members: members become part of the interface, which is ... weird. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkmZ1jkACgkQ9CaO5/Lv0PAu7ACeKb+mqxYgZbHC8VDd+PRQAsvZ B4MAnRYVo2/2eMA5ILWXGWvZik/2lJDo =5EcI -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
