This chapter introduces the most common Scala 3 collections and their accompanying methods. Scala comes with a wealth of collections types, but you can go a long way by starting with just a few of them, and later using the others as needed. Similarly, each type has dozens of methods to make your life easier, but you can achieve a lot by starting with just a handful of them.
Therefore, this section introduces and demonstrates the most common collections types and methods that you’ll need to get started.
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Contents
- Introduction
- Scala Features
- Why Scala 3?
- A Taste of Scala
- Hello, World!
- The REPL
- Variables and Data Types
- Control Structures
- Domain Modeling
- Methods
- First-Class Functions
- Singleton Objects
- Collections
- Contextual Abstractions
- Toplevel Definitions
- Summary
- A First Look at Types
- String Interpolation
- Control Structures
- Domain Modeling
- Tools
- OOP Modeling
- FP Modeling
- Methods
- Method Features
- Main Methods in Scala 3
- Summary
- Functions
- Anonymous Functions
- Function Variables
- Eta Expansion
- Higher-Order Functions
- Write Your Own map Method
- Creating a Method That Returns a Function
- Summary
- Packaging and Imports
- Scala Collections
- Collections Types
- Collections Methods
- Summary
- Functional Programming
- What is Functional Programming?
- Immutable Values
- Pure Functions
- Functions Are Values
- Functional Error Handling
- Summary
- Types and the Type System
- Inferred Types
- Generics
- Intersection Types
- Union Types
- Algebraic Data Types
- Variance
- Opaque Types
- Structural Types
- Dependent Function Types
- Other Types
- Contextual Abstractions
- Extension Methods
- Context Parameters
- Context Bounds
- Given Imports
- Type Classes
- Multiversal Equality
- Implicit Conversions
- Summary
- Concurrency
- Scala Tools
- Building and Testing Scala Projects with sbt
- Worksheets
- Interacting with Java
- Scala for Java Developers
- Scala for JavaScript Developers
- Scala for Python Developers
- Where To Go Next