scala_school

Pros of scala-exercises/scala-exercises

• Actively maintained and updated, with regular commits and contributions from the community.
• Provides a comprehensive set of exercises and lessons covering a wide range of Scala topics, making it a valuable resource for learning and practicing the language.
• Includes interactive exercises that allow users to write and test code directly within the browser, enhancing the learning experience.

Cons of scala-exercises/scala-exercises

• The repository may not be as well-known or widely used as the twitter/scala_school repository, which has a larger user base and more established presence.
• The content and structure of the exercises may not be as polished or well-organized as the twitter/scala_school repository, which has been around for a longer period.

Code Comparison

Here's a brief code comparison between the two repositories:

twitter/scala_school:

object HelloWorld extends App {
  println("Hello, world!")
}

scala-exercises/scala-exercises:

object HelloWorld extends App {
  println("Hello, world!")
}

As you can see, the code structure and syntax are very similar between the two repositories, as they both demonstrate the basic "Hello, world!" program in Scala.

Pros of scala3

• Official Scala 3 compiler and standard library, providing the latest language features and improvements
• More comprehensive and up-to-date documentation for the current Scala ecosystem
• Active development and regular updates from the core Scala team

Cons of scala3

• Steeper learning curve for beginners due to advanced language features
• Less focus on practical, real-world examples compared to scala_school
• Larger codebase, which may be overwhelming for those new to Scala

Code Comparison

scala3:

enum Color:
  case Red, Green, Blue

def matchColor(c: Color): String = c match
  case Color.Red => "It's red!"
  case Color.Green => "It's green!"
  case Color.Blue => "It's blue!"

scala_school:

sealed trait Color
case object Red extends Color
case object Green extends Color
case object Blue extends Color

def matchColor(c: Color) = c match {
  case Red => "It's red!"
  case Green => "It's green!"
  case Blue => "It's blue!"
}

The scala3 example showcases the new enum syntax and pattern matching, while scala_school uses the older sealed trait approach. scala3's syntax is more concise and modern, reflecting the latest language features.

Pros of scala

• Official Scala language repository, containing the core compiler and standard library
• More comprehensive and up-to-date codebase, reflecting the latest language features and improvements
• Extensive test suite and documentation for the Scala language internals

Cons of scala

• Steeper learning curve for beginners due to its complexity and scope
• Less focused on educational content compared to scala_school
• Requires more advanced knowledge to contribute or understand the codebase

Code Comparison

scala:

object HelloWorld {
  def main(args: Array[String]): Unit = {
    println("Hello, world!")
  }
}

scala_school:

def hello(name: String) = s"Hello, $name!"
println(hello("Scala School"))

Summary

scala is the official Scala language repository, offering a comprehensive codebase for the language's core components. It's more suitable for advanced users and contributors interested in the language internals. scala_school, on the other hand, is an educational resource created by Twitter to teach Scala, making it more accessible for beginners. While scala provides the latest language features and improvements, scala_school focuses on practical examples and tutorials to help developers learn Scala programming concepts.

Pros of coursier/coursier

• coursier is a modern, actively maintained dependency management tool for Scala and Java, providing a fast and reliable way to fetch and manage dependencies.
• coursier offers a wide range of features, including support for various dependency resolution algorithms, caching, and offline mode.
• coursier is highly configurable and can be integrated into various build tools, such as sbt, Maven, and Gradle.

Cons of coursier/coursier

• The learning curve for coursier may be steeper compared to the more widely used sbt or Maven, especially for developers new to the Scala ecosystem.
• The documentation for coursier, while comprehensive, may not be as beginner-friendly as the documentation for twitter/scala_school.
• coursier is primarily focused on dependency management, while twitter/scala_school covers a broader range of Scala-related topics.

Code Comparison

twitter/scala_school:

object HelloWorld extends App {
  println("Hello, world!")
}

coursier/coursier:

import coursier._
import coursier.cache.CacheDefaults
import coursier.cli.{CommonOptions, Resolve}

object Main extends App {
  val resolution = Resolve()
    .addDependencies(
      Dependency(
        Module("org.scala-lang", "scala-library"),
        "2.13.8"
      )
    )
    .run(CommonOptions.default)
}