[Haskell-cafe] Obscure, important concepts

[Alejandro Serrano Mena]

Lenses and software transactional memory are covered in my book "Beginning
Haskell" http://www.apress.com/9781430262503

To the list of things that blew my mind, I would like to add data type
generic programming (in the style of GHC.Generics), something which is
really useful but not that discussed.

2014-11-03 23:53 GMT+01:00 Jeffrey Brown <jeffbrown.the at gmail.com>:

> What concepts relatively unique to Haskell are powerful, widely
> applicable, and not mentioned in most introductory texts? (By "relatively
> unique to Haskell" I mean maybe they're part of Lisp or Scheme, but not,
> say, Java.)
>
> Some of the concepts important to Haskell, such as lambda expressions and
> recursion, are also present in more popular languages. Many others, though,
> either have no equivalent in (most) other languages, or else are very
> unlike the equivalent:
>
>     types, classes and kinds
>     higher-order functions
>     evaluation
>         partial application
>         tail recursion
>         laziness
>         currying
>         pattern matching
>         application and composition operations
>     contexts
>         functors, applicatives, monads
>         monad transformers
> *    lenses*
> *    :def macros*
> *    arrows*
> *    continuation passing style*
> *    software transactional memory*
>
> Most of those topics appear to be covered by introductory texts, but the
> last five are not. I found each of them by accident, and each kind of blew
> my mind. They all strike me as powerful, widely applicable, and obscure.
>
> Are there others?
>
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