Re: Educate me on generics please...
Re: Educate me on generics please...
- Subject: Re: Educate me on generics please...
- From: James Cicenia <email@hidden>
- Date: Wed, 6 Feb 2008 16:57:12 -0600
arrrgh... all this to just prevent runtime class cast problems?!
Well, maybe on my new projects I will use generics, but, to go back to
all my legacy code that works? There is no compelling reason.
-j-
On Feb 6, 2008, at 4:35 PM, Chuck Hill wrote:
On Feb 6, 2008, at 2:20 PM, James Cicenia wrote:
Hmmm,
And to think I learned that method of qualifier creation from
either a book or Apples own docs years ago.
I think Pierre's point was not that your code is bad, but that
Generics don't solve that problem. They prevent runtime class cast
problems (mostly). That is a problem that I don't have anywhere
often enough to justify the time cost of fiddling with Generics.
Chuck
But mixing the objects in the List was confusing me, which is what
Johann said about just using <Object>
-j-
On Feb 6, 2008, at 3:52 PM, Mr. Pierre Frisch wrote:
I completely disagree on this one. Your example is bad as it mixes
different type of objects in the List. The point of generics is to
catch type cast exception at compile time instead of run time. if
you mix objects in the same array then it has no value but this is
bad style anyway.
Pierre
--
Pierre Frisch
email@hidden
On Feb 6, 2008, at 12:37, Chuck Hill wrote:
On Feb 6, 2008, at 12:33 PM, James Cicenia wrote:
Well I have decided to to start going to 1.5 now.
this is something I do all the time:
NSMutableArray args2 = new NSMutableArray();
args2.addObject("portfolio");
args2.addObject(portfolio);
myQualifier2 = EOQualifier.qualifierWithQualifierFormat("%@ =
%@", args2);
NSArray results =
EOQualifier
.filteredArrayWithQualifier(portfolioUserGroups(),myQualifier2);
How do I make that "generic Java 1.5" friendly?
From Art:
http://weblogs.java.net/blog/arnold/archive/2005/06/generics_consid_1.html
http://www.mindview.net/WebLog/log-0050
YMMV :-)
Chuck
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Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve
specific problems.
http://www.global-village.net/products/practical_webobjects
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problems.
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