ola

Serves me right, should have tested the code before I submitted it. Just s/span/partition/ and it should work.

You're doing two filters with list comprehensions which you could switch with one span:

    quicksort (x:xs) = let (a, b) = span (< x) xs in (quicksort a) ++ [x] ++ (quicksort b)

I don't know what to say other than that I was thoroughly disencouraged after reading this post.

Crash by JG Ballard

What's with all the domains paraphrasing 37signals? Is there some chic trend I'm not aware of?

Is "double plus good" better? Of course if it was appended with "programmer" you'd have to assume fluency in Newspeak.

That's a very true observation mhartl and I try to touch on it in my last sentence although it is enigmatically worded as I was trying to sneak a "Premature optimization is the root of all evil" reference into it. Alas not all wordplay is destined for upmods!

The article seems to have two messages: one that it's better to fully comprehend the problem before you start coding; the other that learning a powerful library will save you pages of code. Both well rehearsed truths of computer programming.

As for myself I often find that I have to fully explore the problem on my own terms before I can maturely optimize my source.

I'm sure nobody could _challenge_ that fact.

Yes thats a fantastic idea! In fact in my next book "Avionics and Applied Rocket Science" I've added an insidious little snippet that all O-rings should be stored in sub zero temperatures to preserve their integrity, that aught to keep those bongo playing physicist on their toes!

Just like he solved the worlds walking problems!