通过Scalaz找到我的路 [英] Finding my way through Scalaz

问题描述

可能存在重复：

好的scalaz介绍

我想了解更多关于Scalaz的信息，一旦宣布稳定后，Scalaz7将避免重新连线我的大脑。我的问题是，斯卡拉兹包含很多功能。尽管大部分内容都是独立于其他部分的，但我想全面了解斯卡拉斯提供的全球功能以及它的组织方式。据我所知，斯卡拉斯除其他外还提供了

$ b

Functor ， Applicative 和 Monad 特质，

新单体，如验证（编辑：原来它只是一个应用程序）

monad变换器（ OptionT ， EitherT ....）

Itereatee s

Lens es

Zipper s

除此之外，还有很多隐式转换和新构造函数，如一些它与标准库重叠，但在类型方面表现更好

 ：type Some（3）// Some [Int] 
：键入some（3）// Option [Int] 
  

我有一个基本的把握大多数这些结构，但我不熟悉任何概念。

你有什么建议以什么顺序学习图书馆，什么逻辑dep模块之间存在共同点？更普遍的是，我可以在哪里找到该库的高级概览？

编辑答案是针对学习函数式编程的基本组件，比如monad，所以我会尽量做得更精确。我有Haskell的基础知识和数学背景，所以我的问题与分类理论或基本的函数式编程无关。

我的问题是Scalaz是一个庞大的库。我不知道在哪里找到哪些方法可用或对各种数据类型有用。我真正需要的是一张地图，例如，它会告诉我，当我想对需要处理的资源进行迭代时，我可能会考虑迭代以及我可以使用哪种操作。更像是全面了解图书馆可用的功能。

我会推荐优秀的系列 学习scalaz 由Eugene Yokota在Scalaz 7上撰写。作者遵循了解你对Haskell的好处。这种方法是系统的，非常有教育意义。

Possible Duplicate:
Good scalaz introduction

I would like to learn more about Scalaz, possibly using Scalaz7 to be avoid rewiring my brain once it is declared stable. My problem is that Scalaz contains a lot of functionality. While most of it is meant to be independent of other parts, I would like to have a bird's eye view of the global funcitonality offered by Scalaz and how it is organized. As far as I know, Scalaz offers, among other things,

• Functor, Applicative and Monad traits,
• new monads such as Validation (edit: turns out it is only an applicative)
• monad transformers (OptionT, EitherT....)
• Itereatees
• Lenses
• Zippers

Added to this there are a lot of implicit conversions, and new constructors such as some which overlap with the standard library but behave better with regards to types

:type Some(3) // Some[Int]
:type some(3) // Option[Int]

I have a basic grasp of most of these constructions, but I am not fluent with any of the concepts.

Do you have any suggestion in what order to learn the library, what logical dependencies exist between modules? More generally, where can I find a high level overview of the library?

EDIT It seems that most answers are directed towards learning the basic components of functional programming, like monads, so I will try to be more precise. I have a basic knowledge of Haskell and a mathematician background, so my issue is not related to category theory or basic functional programming.

My problem is that Scalaz is a huge library. I do not know what to find where, what methods are available or useful on various data types. What I really need is a map that, for instance, will tell me that when I want to iterate over resources that need to be disposed, I may want to consider iteratees and what kind of operations I can do with that. More like a panoramic of the functionality available with the library.

解决方案

I would recommend the excellent series Learning scalaz by Eugene Yokota on Scalaz 7. The author follows the structure of Learn You a Haskell for Great Good. The approach is systematic and very pedagogic.

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