Scala

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Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries.
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Track mentors

15 Mentors

Our mentors are friendly, experienced Scala developers who will help teach you new techniques and tricks.
Track students

6,759 Students

Join thousands of students who have enjoyed learning and improving their skills by taking this track.
Track exercises

91 Exercises

Hundreds of hours have gone into making these exercises fun, useful, and challenging to help you enjoy learning.

About Scala

object HelloWorld {
  def hello() = "Hello, World!"
}

Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries.

  • Features
    • JVM Interoperability - Scala runs on the JVM, so Java and Scala stacks can be mixed for seamless integration.
    • Type Inference - Scala is statically typed. However, Scala provides type inference to ease the burden of an advanced type system.
    • Object Oriented - Scala is a pure object-oriented language in the sense that every value is an object. Data types and behaviors of objects are described by classes and traits. Class abstractions are extended by subclassing and by a flexible mixin-based composition mechanism to avoid the problems of multiple inheritance.
    • Functional - Scala is also a functional language in the sense that every function is a value. Scala provides a lightweight syntax for defining anonymous functions, it supports higher-order functions, it allows functions to be nested, and supports currying. Scala’s case classes and its built-in support for pattern matching model algebraic types used in many functional programming languages. Singleton objects provide a convenient way to group functions that aren’t members of a class.
    • Concurrency & Distribution - Use data-parallel operations on collections, use actors for concurrency and distribution, or futures for asynchronous programming.
Join the Scala track

Exercism is a great website

What I like about it is that I am able to solve the challenges in a TDD way working in a environment that I am familiar (my own PC not a browser IDE) and the cherry on the top of the cake is that I have access to code reviews.

Relaxed. Encouraging. Supportive.

Meet the Scala Track mentors

Once you join the Scala language track, you will receive support and feedback from our team of mentors. Here are the bios of a few of the mentors of this track.

Avatar of Rajesh Pitty

Rajesh Pitty https://github.com/rajeshpg

a passionately curious scala functional programmer
Avatar of Raphael Bobillot

Raphael Bobillot https://github.com/rbobillo

As a Scala Technical Officer @ CarbonIT, I just love working with Scala (the Category Theory way haha) and its awesome ecosystem
Avatar of Max Leuthäuser

Max Leuthäuser GitHub

Software Engineer and IT Consultant. Scala Enthusiast.
Avatar of Shankar Shastri

Shankar Shastri GitHub Profile

Lover Of Pure Functional Programming.
Avatar of Avremel Kaminetzky

Avremel Kaminetzky Personal Website

I enjoy the functional/immutable style of Scala.
Avatar of Adrian King Legaspi

Adrian King Legaspi https://github.com/akilegaspi

Generally a Purely Functional Programming advocate and Professional Software Engineer in Scala/Haskell
Fun. Challenging. Interesting

Community-sourced Scala exercises

These are a few of the 91 exercises on the Scala track. You can see all the exercises here.

OCR Numbers
medium
lists
parsing
pattern recognition
strings
transforming
Dominoes
medium
games
lists
optional values
tuples
Grade School
easy
maps
sequences
sorting
All Your Base
medium
integers
lists
optional values
transforming
math
Matching Brackets
medium
parsing
strings
Sublist
medium
enumerations
generics
lists
Passionate. Knowledgeable. Creative.

Meet the Scala Track maintainers

The Scala Maintainers are the brains behind the Scala Track. They spend their spare time creating interesting and challenging exercises that we can all learn from. We are incredibly grateful for their hard work. Here are the bios of a few of the maintainers of this track.

Avatar of Ric Emery

Ric Emery

This maintainer has not added their bio yet.
Avatar of Erik Schierboom

Erik Schierboom My blog

This maintainer has not added their bio yet.

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Join the Scala Track