On Fri, Apr 24, 2009 at 15:26, Bulat Ziganshin <bulat.ziganshin@gmail.com> wrote:

Hello Chris,

Friday, April 24, 2009, 5:21:20 PM, you wrote:

> No, but the functions you mentioned do fail immediately. If I use a
> head on an empty list I get an error immediately. If I use fromAscList
> incorrectly I get an error only when I try to lookup elements. This
> makes it hard to debug if you didn't make this error before. I don't
> mind a runtime error in this case, but I very much want to know where
> my bug is.

how about providing such check only in *debugging* version of library?

I think the decision whether to include specific check should be left up to the developer. Perhaps I would like to retain only a subset of checks, while debugging version restricts my freedom and I would end up writing my own version. Giving functions with and without checks is a good way of giving such freedom.

Regards

Christopher Skrzętnicki