If you've never been exposed to lambda calculus, then you're in for a real treat! There is no shortage of tutorials on this. If Greek letters and symbol manipulations are not your thing, take a look at http://worrydream.com/AlligatorEggs/ which describes a game that teaches children about lambda calculus. It is fun to read even for experts. I got the above link off the Wikipedia page http://en.wikipedia.org/wiki/Lambda_abstraction which you can take a look at when you're done learning how alligators each other, lay eggs, and die, in color! PR Stanley wrote:
f x = x + x Is the "x" use to create a pattern in the definition and when f is called it's replaced by a value?
Those equation-like definitions are syntactic sugar for lambda abstractions. f could as well be defined as f = \x -> x + x.
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