scala_school | Lessons in the Fundamentals of Scala | Learning library

 by   twitter HTML Version: Current License: Apache-2.0

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kandi X-RAY | scala_school Summary

kandi X-RAY | scala_school Summary

scala_school is a HTML library typically used in Tutorial, Learning, Example Codes applications. scala_school has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

This is Scala School - a set of lessons covering the Scala programming language.
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              scala_school has a medium active ecosystem.
              It has 3691 star(s) with 1153 fork(s). There are 331 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 11 open issues and 38 have been closed. On average issues are closed in 270 days. There are 13 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of scala_school is current.

            kandi-Quality Quality

              scala_school has no bugs reported.

            kandi-Security Security

              scala_school has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              scala_school is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              scala_school 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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            scala_school Key Features

            No Key Features are available at this moment for scala_school.

            scala_school Examples and Code Snippets

            No Code Snippets are available at this moment for scala_school.

            Community Discussions

            Trending Discussions on scala_school

            What is a unary type?
            What does "too generic" type system mean?

            QUESTION

            What is a unary type?
            Asked 2020-May-30 at 11:23

            I am going through Higher-kinded types & ad-hoc polymorphism section of twitter's Scala School and I don't understand and can't find reference anywhere to a unary type. Here is the context of the usage:

            For example, whereas “unary types” have constructors like List[A], meaning we have to satisfy one “level” of type variables in order to produce a concrete types (just like an uncurried function needs to be supplied by only one argument list to be invoked), a higher-kinded type

            ...

            ANSWER

            Answered 2017-Mar-23 at 17:32

            Unary is another way of saying "of arity one". A one parameter function is said to be unary, whereas a two parameters function is binary, three is ternary and so forth...

            The same principle applies to types. List[A] or Set[A], for example, takes one type A to form a new proper type, whereas Map[A, B] takes two and is said to be a binary type constructor.

            On a side note, types which abstract over a type constructor are called higher kinded types (e.g : Monad[F[_]])

            Source https://stackoverflow.com/questions/42980755

            QUESTION

            What does "too generic" type system mean?
            Asked 2017-Dec-08 at 10:05

            Referring to the following tutorial https://twitter.github.io/scala_school/type-basics.html, foo[A,B] will not compile because it is 'too generic'. I do not understand what 'too generic' implies. Why does foo doesn't compile but foo1 does?

            ...

            ANSWER

            Answered 2017-Dec-08 at 10:05

            The type of f is A => List[A]. This means that f can only be called with an argument of type A. Therefore b must be of type A for f(b). b: B is too generic in the sense that you allow b to be of any type, not just A.

            Consider for example the following function:

            Source https://stackoverflow.com/questions/47711841

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

            Vulnerabilities

            No vulnerabilities reported

            Install scala_school

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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