Basic Class and Constructor | Spark Scala Learning Note - JiaMing Lin [PDF]

Spark Scala Learning Note

Introduction 1. Develope Envirinment Setup

Basic Class

2. Scala Basic 2.1. For And Yield 2.2. Functions 2.3. Class and Case Class

class Calculator { val brand = "HP" def add(m:Integer, n:Integer) = m+n }

2.3.1. Basic Class and Constru… 2.3.2. Abstract Class 2.3.3. Case Class 2.4. Object, Compaion Object 2.5. Traits

Usage val cal = new Calculator println(cal.add(2,3))

Output

2.6. Pattern Matching 2.6.1. Matching on Value

5

2.6.2. Matching on Type 2.6.3. Matching on Class Mem…

Constructor

2.7. Exception 2.8. Data Structure 2.8.1. Option

class Calculator(brand:String){ /** * A constructor. */