squeeko/Scala-CheatSheet

The Biggest Scala Cheat-Sheet.

Scala CheatSheet

A "Cheat-Sheet" for Scala. Under development. Click on watch to keep you informed of updates. Designed for people who are already familiar with the Scala programming language, for small reminders.

I am not a Scala professional, so please report my errors in the issues, in order to have better quality content. To read, consider each section as a separate cheat sheet, not the whole project as a cheat sheet. Thank you and have fun!

Getting Started

You can read the Cheat-Sheet by accessing this link : https://riiswa.github.io/Scala-CheatSheet/

Table of contents

• Scala Cheat Sheet
  • Scala essentials
    • Display and Strings
      • Blocks and expressions
    • Method definitions
    • Conditional
    • Pattern matching
    • Exceptions
    • Parametric type
  • Object oriented programming
    • General hierarchy of classes / traits / objects
    • object
    • class
  • Arrays
    • Declaration of array
    • Access to the elements
    • Iteration on the elements of an array
    • Creating an array by transformation
      • for/yield
      • filter
      • map
      • sortWith
      • reduce
    • Arrays with a variable size
  • Main collections
    • Principles
    • Tuples
    • Map
      • Map implementations
    • Option
    • Either
    • Lists
    • Set
      • Set Implementations
    • Vector
    • Stack
    • Queue
    • Range
    • Streams
  • Collections in detail
    • Traversable
    • Iterable
    • Seq
    • Usual operations
      • Add / remove an element
      • Update
      • Assemblist operations
      • Cast
      • Operations of Iterables
      • Selection and cutting
      • Transformation of a collection
      • Operations of Seq
    • Parallel collections
      • par
    • Lazy view
  • Object oriented programming
    • Class statement
    • public, private and protected access
      • public
      • private
      • protected
      • Refine the scope of access
    • Getters and Setters
    • Constructors
    • Nested Classes
    • Anonymous Classes
    • Type and this
    • Transtyping
    • Object
      • Singleton Object
      • Any Methods
      • Apply and Unapply
    • case class
    • Inheritance
      • extends
      • Constructor and super-class
      • override
    • Abstract class
    • final
    • Implicit conversions
      • Implicit class
      • implicit conversions method
    • Trait

How to contribute

Install beakerx, edit scala_cheatsheet.ipynb and Pull Requests.

Expected

• Pattern Matching
• Parametric types
• XML
• Future and Promise
• Akka actors
• Delimited continuations