Difference between revisions of "User:Lenny222/Haskell explained to the busy"
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|What is '''point-free style'''? |
|What is '''point-free style'''? |
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− | |Point-free style is |
+ | |Point-free style is a way to define function soley as a composition of other functions, leaving arguments out. |
For example: |
For example: |
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<haskell>takeFive x = take 5 x</haskell> |
<haskell>takeFive x = take 5 x</haskell> |
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is the same as |
is the same as |
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<haskell>takeFive = take 5</haskell> |
<haskell>takeFive = take 5</haskell> |
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+ | in point-free style. |
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|What is the meaning of the '''dot''' "'''.'''"? |
|What is the meaning of the '''dot''' "'''.'''"? |
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.
Introduction
Question | Answer |
---|---|
What is Haskell? | TODO |
Why the name "Haskell"? | Haskell is named after the American mathematician Haskell Curry |
Basics
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
|
Advanced
Question | Answer |
---|---|
What is a Monad? | TODO |
What is the meaning of "forall"? | TODO |