Difference between revisions of "User:Lenny222/Haskell explained to the busy"

Revision as of 10:39, 29 September 2009

You have heard about Haskell but don't have the time to find out what it is?

I hope this page is for you.

Question	Answer
What is Haskell?	TODO
Why the name "Haskell"?	Haskell is named after the American mathematician Haskell Curry

Question	Answer
What is the meaning of the dollar sign "$"?	"$" is a way to avoid typing too many brackets. For example: foo x = h (g (f x)) is the same as foo x = h $ g $ f x
What is point-free style?	Point-free style is a way to define functions solely as a composition of other functions, leaving arguments in the definiton out. For example: takeFive x = take 5 x is the same as takeFive = take 5 in point-free style.
What is the meaning of the dot "."?	"." is used to compose functions in point-free style, similar to "$". For example: foo x = h $ g $ f x is the same as foo = h . g . f

Question	Answer
What is a Monad?	TODO
What is the meaning of "forall"?	TODO

@@ Line 31: / Line 31: @@
 |-
 |What is '''point-free style'''?
-|Point-free style is a way to define function solely as a composition of other functions, leaving arguments out.
+|Point-free style is a way to define functions solely as a composition of other functions, leaving arguments in the definiton out.
 For example:
 <haskell>takeFive x = take 5 x</haskell>