Difference between revisions of "User:Lenny222/Haskell explained to the busy"
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− | You have heard about Haskell but don't have the time to find out what it is? |
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− | I hope this page is for you. |
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− | == Introduction == |
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− | {| class="wikitable" |
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− | |- |
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− | ! Question |
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− | ! Answer |
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− | |- |
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− | |What is Haskell? |
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− | | TODO |
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− | |- |
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− | |Why the name "Haskell"? |
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− | | Haskell is named after the American mathematician [http://en.wikipedia.org/wiki/Haskell_Curry Haskell Curry] |
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− | |} |
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− | == Basics == |
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− | {| class="wikitable" |
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− | |- |
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− | ! Question |
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− | ! Answer |
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− | |- |
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− | |What is the meaning of the '''dollar''' sign "'''$'''"? |
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− | |"$" is a way to avoid typing too many brackets. |
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− | For example: |
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− | <haskell>foo x = h (g (f x))</haskell> |
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− | is the same as |
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− | <haskell>foo x = h $ g $ f x</haskell> |
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− | |- |
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− | |What is '''point-free style'''? |
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− | |Point-free style is a way to define function solely as a composition of other functions, leaving arguments out. |
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− | For example: |
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− | <haskell>takeFive x = take 5 x</haskell> |
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− | is the same as |
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− | <haskell>takeFive = take 5</haskell> |
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− | in point-free style. |
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− | |- |
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− | |What is the meaning of the '''dot''' "'''.'''"? |
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− | |"." is used to compose functions in point-free style, similar to "$". |
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− | For example: |
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− | <haskell>foo x = h $ g $ f x</haskell> |
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− | is the same as |
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− | <haskell>foo = h . g . f</haskell> |
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− | |} |
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− | == Advanced == |
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− | {| class="wikitable" |
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− | |- |
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− | ! Question |
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− | ! Answer |
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− | |What is a '''Monad'''? |
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− | |TODO |
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− | |- |
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− | |What is the meaning of "'''forall'''"? |
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− | |TODO |
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− | |} |