learning-scalaz | source for learning Scalaz

 by   eed3si9n Scala Version: Current License: No License

kandi X-RAY | learning-scalaz Summary

kandi X-RAY | learning-scalaz Summary

learning-scalaz is a Scala library. learning-scalaz has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

source for learning Scalaz.
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              learning-scalaz has a low active ecosystem.
              It has 48 star(s) with 16 fork(s). There are 5 watchers for this library.
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              It had no major release in the last 6 months.
              There are 4 open issues and 2 have been closed. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of learning-scalaz is current.

            kandi-Quality Quality

              learning-scalaz has no bugs reported.

            kandi-Security Security

              learning-scalaz has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              learning-scalaz does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

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              learning-scalaz releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            learning-scalaz Key Features

            No Key Features are available at this moment for learning-scalaz.

            learning-scalaz Examples and Code Snippets

            No Code Snippets are available at this moment for learning-scalaz.

            Community Discussions

            QUESTION

            Creating a Writer monad in Scala
            Asked 2018-Sep-14 at 18:02

            To learn how to create monads and to learn their internal mechanisms I am trying to implement a version of Writer following this awsome article: You Could Have Invented Monads!

            The problem I'm facing is that I can't use the data structures I created in a for comprehension.

            This is a cleaned extract of my code:

            ...

            ANSWER

            Answered 2018-Sep-14 at 18:02

            Here is how you can force it to compile:

            Source https://stackoverflow.com/questions/52336580

            QUESTION

            Can we reverse Applicative of List?
            Asked 2018-Mar-04 at 04:38

            I'm reading about scalaz and noticed that we can make a list of Applicatives to be an Applicative of List.

            ...

            ANSWER

            Answered 2018-Mar-03 at 19:29

            This is possible if the F in question is Traversable. The code you're showing is specialized for List, but in fact it holds for all Traversable functors.

            This means, that for every F that's Traversable and any G that's Applicative, we can go from F[G[A]] to G[F[A]] with sequence.

            List also has an Applicative, so we can use it as our G, whereas in your example List was used as the F, the Traversable functor.

            An example where what you're asking works could be Option. Here's the original direction:

            Source https://stackoverflow.com/questions/49087695

            QUESTION

            TypeClasses in ScalaZ
            Asked 2017-Nov-26 at 04:32

            I'm reading ScalaZ tutorial and now I'm on the section of Yes-No type class. Eventual goal is to get 1.truthy to return true. Here is the implementation of the typeclass:

            ...

            ANSWER

            Answered 2017-Nov-26 at 04:32

            I think the problem here is a misreading of the scope of this sentence:

            Eventual goal is to get 1.truthy to return true.

            This is what we're trying to do with the CanTruthyOps stuff, but it's not the goal of the CanTruthy type class, and more generally syntactic concerns like this aren't the goal of type classes.

            The goal of type classes is to allow us to constrain types in a simple, flexible, compositional way. The type parameter-less CanTruthy approach doesn't really support the simple part or the flexible part or the compositional part very nicely (arguably the implementation of type classes in Scala isn't very simple either, but it's at least a little simpler and definitely more flexible and compositional).

            Take this method from the tutorial, for example (lightly modified to avoid the Any):

            Source https://stackoverflow.com/questions/47357537

            QUESTION

            Understanding FoldLeft in ScalaZ
            Asked 2017-Nov-16 at 20:48

            I'm reading some articles about ScalaZ and have a question about understanding it. In this article, we generalize the sum function, to abstract away the type to be summed.

            ...

            ANSWER

            Answered 2017-Nov-16 at 20:48

            Applicative functor is a type class with two operations: A => F[A] and F[A => B] => F[A] => F[B]. None of operations you mentioned has such signature. FoldLeft is more like Foldable. It's a different type class, a parent of Traversable (aka Traverse). And Traversable is connected with Applicative.

            Source https://stackoverflow.com/questions/47337057

            QUESTION

            scalaz lens from example does not work
            Asked 2017-Oct-05 at 19:06

            When i try to use Lens.lensu from scalaz.7.2.15, (i check http://eed3si9n.com/learning-scalaz/Lens.html)

            ...

            ANSWER

            Answered 2017-Oct-05 at 19:06

            You can read <=< as "after". Then

            Source https://stackoverflow.com/questions/46572811

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

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            You can download it from GitHub.

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