The Scala Programming Language, New Zealand

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The Scala Programming Language was invented in 2004 in an attempt to bring functional programming to the jvm, and the java development community. It has risen to prominence in recent years as the de-facto language to compliment and replace java in existing teams, and as an advanced and capable language on greenfield projects.

Scala combines advanced techniques long established in the functional programming community with the best practices of object-orientation, allowing developers to pick and chose a style and an approach that suits their team and their problems.

By the end of this course delegates will have a clear understanding of object orientation and functional programming, and in particular, all the major features of scala which enable these styles of programming to be used and combined.

The course is divided in to 15 modules (listed in the overview) delivered over five days with an attention to an interactive Q&A-style approach to teaching and exercise practice.

Delegates must have prior programming experience in java or a related object-oriented language.

Day 1

1 Introduction

Why scala?
Libraries
Static typing
Compositional syntax
OO
Functional
Powerful
Paradigms
OO
Functional
Running scala
Anatomy of scala programs
Try the repl
Scalac
Scala interpreter
Sbt

1 Fundamentals

Language
Objects
Calling methods
Operators as methods
Values and variables
Types
Basic types
Boolean
Numeric types
Unit
Strings
String methods
Introduction to collections
Type arguments
Tuples, Lists, Maps

1 Flow

Branching, matching & selecting
Conditionals
Intro to pattern matching
Destructuring
For comprehensions
Yield vs Unit
Comprehensions over lists
Comprehensions over maps
Comprehensions over ranges
Option
Multiple extraction
Guards
Ranges
Let expressions
While loops

Day 2

2 Methods

Code blocks
Methods
Method bodies
Returning unit
Passing arguments
Variadics
Def vs val
Lazy vals
Lazy arguments
Recursion

2 Functions

What Is Functional Programming?
Pure Functions
Functions
The Function Type
‘Function’ vs Method
Higher Order Functions
Functions as Data
Currying
Aside: Type Aliases

2 Collections

Review: types
Collections heirachy
Creating collections
Range
Array & array buffer
List & list buffer
Vector
Maps
Sets
Empty
Idioms
Pattern matching
For comprehnsions review
Zipping
Traits

Day 3

3 Transformation

Streams
Combinators
.map & .flatMap
Folding & Reducing
.exists and .forall
Option
For comprehensions
Foreach & Flatmap
Pattern matching
Review
Casting
Sequences
For-yield-match
Regex
Guards
Option

3 OO

Classes
Reading class definitions
Defining classes
Constructors
Properties
Method overloading
Java inspection of scala classes
Getters and setters
Operator methods
Objects
The object keyword
Companions
The mechanism of pattern matching
Case classes
Pattern matching with case classes
Aside: case objects

3 Inheritance

Inheritance: a type relation
Inheritance: class relationship
Overriding methods
Overriding tostring
Calling the parent method
Abstracts
Traits
Trait inheritance
Composing objects with traits
The meaning of super
Traits as mixins
Self types
Cake pattern
Aside: type members

Day 4

4 Design

Imports
Package objects
Algebra
Algebraic data types: defining
Algebraic data types
Example: document store
Tuples types
Generics
Type arguments
Variance
Special types
Option
Example: user data
Bad: exceptions
Try
Either

4 SBTest

Simple build tool
Build files
Creating a project
Dependencies
Project structure
Running tests
Sbt task runner
Testing
Type systems as tests
Using type systems
Assertions
Scala test
Flatspec
Featurespec
Matchers

4 Implicits

Implicit conversions
Implicit conversions: def
Implicit conversions: implicit classes
Implicit parameters
Contexts
Scoping
Type classes
Typeclasses with implicit classes
Without typeclasses
Typeclasses: generalizing
Typeclasses: implicit objects
Typeclasses: multiple instances

Day 5

5 HigherKinds

Review: Polymorphism
Review: Typeclasseses: Monoid
Scalaz
Sbt for Scalaz
Simple Typeclass: Equal
Simple Typeclass: Order
Simple Typeclass: Implementing Equal
Kinds
Higher-kinded Types: Functor
Generalizing Functor
Higher-kinded Types: Applicative
Monads

5 Appendix

Concurrency
Libraries

The Scala Programming Language Training Course in New Zealand

New Zealand is an island country in the southwestern Pacific Ocean and it consists of two main islands and 700 smaller islands. Two main islands are the North Island and the South Island. The capital city of New Zealand is Wellington and the most popular city of the island country is Auckland. English, Māori and New Zealand Sign Language are the official languages of New Zealand. As of January 2022, the population of the country is about 5,138,120. 70% of the population are of European descent, 16.5% are indigenous Māori, 15.1% Asian and 8.1% non-Māori Pacific Islanders.

Since most of the country lies close to the coast, mild temperatures are observed year-round. January and February are the warmest months while July is the coldest month of the year. Fiordland, the first national park of New Zealand Tongariro

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The Scala Programming Language Training in New Zealand

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The Scala Programming Language Training in New Zealand

Prerequisites

Outline

CONCURRENT PROGRAMMING LANGUAGES

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