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What is wrong with Generics?

Piet Souris
Ranch Hand

Joined: Mar 08, 2009
Posts: 854
Thanks Pat, for bringing us all back into the real world

But to end (?) this topic in a more positive way:

What is great about Generics?

1) I like them a lot, type erasure or not

But most of all:

2) they sometimes give rise to very interesting and entertaining topics!
Winston Gutkowski

Joined: Mar 17, 2011
Posts: 8657

Pat Farrell wrote:On the more general topic: what is wrong with Generics, their design and implementation?

My answer:
1. People expect too much of it.
2. The compiler warnings are crap.

If you actually read Gilad Bracha's paper (now, thankfully, translated to the tutorials), he explains the issues with implementation, which basically boils down to the fact that, for whatever reasons, Java was NOT able to make typed classes first-class objects, so they chose the next best option that was backwards bytecode-compatible: type erasure.


Isn't it funny how there's always time and money enough to do it WRONG?
Articles by Winston can be found here
I agree. Here's the link:
subject: What is wrong with Generics?