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

Revision as of 10:24, 29 September 2009

You have heard about Haskell but can not afford to spend much 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 function soley as a composition of other functions, leaving arguments 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 in point-free style code 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 another way to define TODO
+|Point-free style is a way to define function soley as a composition of other functions, leaving arguments out.
 For example:
 <haskell>takeFive x = take 5 x</haskell>
 is the same as
 <haskell>takeFive = take 5</haskell>
+in point-free style.
 |-
 |What is the meaning of the '''dot''' "'''.'''"?