On 25 Apr 2009, at 17:32, j.waldmann wrote:
* with practically every modern IDE
You mean, with Emacs?
* indentation should be by fixed amounts (e.g. 4 spaces for each level) and not depend on lengths of identifiers (because you might later change them)
Agreed. I always write code that way
(well, actually you won't because we don't have Refactor->Rename that would be aware of namespaces, modules etc.)
Incorrect. Renaming local variables is quite common (and doesn't require anything like Refactor->Rename). By the way, if we did have Refactor->Rename, it should be able to change indentation as well.
* A lot of my code is written for teaching, in fact I try to write all code in such a way that it could be shown to students, and so I try to use less than 40 chars per line because more won't fit on a slide.
For teaching, or for other forms of presentations - yes, that's an upper bound.
And, the slide holds at most 10 lines, so this gives a pretty clear bound on the size of a function. If it's larger, then it needs to be refactored.
Well, somebody said once that a function shouldn't be large than a human's head, literally. But I wonder, how a Haskell function can be more than 10 lines long (if it is not Main.main).