Comments on: Drawing fractals in Haskell with a cursor graphics DSEL and a cute list representation

By: List convolutions « blog :: Brent -> [String]

List convolutions « blog :: Brent -> [String] — Tue, 22 Apr 2008 20:23:55 +0000

[...] Then list concatenation is just function composition — O(1) instead of O(n). Kenn Knowles wrote about this representation recently, and Don Stewart has written the dlist package implementing it. We don’t require a whole [...]

By: max630

max630 — Fri, 18 Apr 2008 05:37:58 +0000

now it works for mee too

By: Kenn

Kenn — Fri, 18 Apr 2008 03:56:04 +0000

max360,

Thanks for the bug. I think I have done as you suggest. It does not crash for me so I am not sure.

By: max630

max630 — Fri, 18 Apr 2008 03:47:42 +0000

Your code crashes on debian lenny/amd64. This happens when it accesses viewport first time, before actual drawing.

If I insert another glDrawableGLBegin/glDrawableGLEnd before scaling, it works.

By: Kenn

Kenn — Wed, 16 Apr 2008 21:00:54 +0000

Kefer,

Thanks for the pointer to the DList package, I'm adding a link to it. (I would have shown the definitions for fun anyhow)

By: kefer

kefer — Wed, 16 Apr 2008 20:45:18 +0000

Hackage has Data.DList; you needn’t reinvent the wheel with newtype List.