Archive for the ‘Generics’ Category.
September 1, 2010, 12:41 am
This week’s just getting started, and it’s already had more than enough awesomeness to pack into a typical month. The new version of Delphi came out yesterday. Metroid: Other M and The Way of Kings, a new Brandon Sanderson book, were both released today. (I have a feeling I’m going to be more distracted than usual for a while…) But as awesome as Metroid games and anything by Sanderson tend to be, (if you’re into fantasy at all, check out Elantris and Mistborn and prepare to be blown away,) this is a programming blog, and I’m supposed to be talking about Delphi. So here’s the good, the bad, and the annoying about my first impressions with Delphi XE.
Continue reading ‘First look at Delphi XE’ »
June 22, 2010, 3:52 pm
Since some version of this question keeps showing up on StackOverflow, and the answer’s always basically the same, I figured I may as well write up a post on here that people can link to. Here’s the question, in simplified form:
“Why can’t I pass a TList<TMyDerivedObject> to a function that’s expecting a TList<TMyBaseObject>? You can pass a TMyDerivedObject to a parameter expecting TMyBaseObject, so why doesn’t it work for lists?”
Continue reading ‘Generics and the Covariance Problem’ »
March 9, 2010, 2:41 pm
I really loved when Delphi 2009 came out, how it fixed so many ugly problems in the Delphi IDE. The stability issues and memory leaks that plagued D2006 and D2007 were greatly reduced. And it just got better in D2010.
The tradeoff, though, seems to have been compiler stability. Trying to do anything with Generics in D2009 before Update 3 came out was a nightmare, and even after, (and even in D2010,) there were still plenty of dark corners where you can end up with an Internal Compiler Error or linker error on something that, syntactically speaking at least, is perfectly cromulent Object Pascal.
Continue reading ‘How to break the D2010 compiler’ »