On Sat, Oct 11, 2008 at 5:30 AM, Holger Siegel
- The explanation of the layout rule is wrong. If you define more than one value in a let declaration, then it is only required that the identifiers start on the same column.
Thank you - updated.
- When I started to learn Haskell, I had problems with the use of (.) and ($). I had learned what function application and lambda abstractions look like, but then I looked at Haskell code written by experienced Haskellers and found expressions like (map (succ . succ) $ 1:xs) that I did not understand. A small section describing how to read such expressions could be useful for beginners.
Me too. I had a section on that originally but cut it due to time. Patches are always welcome :)
- the section about do-notation is more a mini-tutorial than a cheatsheet. Instead, you could show two or three examples that demonstrate how do- notation, list comprehensions and the operator >>= relate. That is what I had to look up more than once until I got used to it. There is also an example of what is wrong, where showing the right thing would have sufficed.
True, but I think it's helpful. That stuff really confused me at first. Justin