[Haskell-beginners] Most important Functional Methods

[Erik Price]

On Saturday, June 7, 2014, Richard Seldon <arcseldon at gmail.com> wrote:

> Hello,
>
> I have a general question, not specific to Haskell although I am learning
> Haskell as I ask this question..
>
> Please can someone provide consensus on the most important functional
> methods in their view.
>
> I read somewhere that having map, reduce, filter, mergeAll, and zip pretty
> much means everything else can be derived.


You might be interested in reading this excellent introductory article on
folds, which are Haskell's equivalent to what some languages call reduce:

http://www.cs.nott.ac.uk/~gmh/fold.pdf

It shows how many of the basic higher-order functions (such as map, filter,
etc) can be derived from a fold.

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