Scala Tutorial

      Introduction to Scala

      Installing Scala

      Scala Hello World in Intellij IDEA

      Hello World using scalac and scala

      Eclipse: Hello World using worksheet

      Mutable and Immutable variables

      semicolons are optional

      Data types

      Working with Strings

      Define a string

      Concatenate strings

      Triple quotes to handle multi line strings

      String interpolations

      Formatting strings: printf notation

      Unified Type System

      Type Operators

      Expression and statements

      Expression Blocks

      Nested Expression Blocks

      if/else expression blocks

      What if condition returns value of some type and else return some other type

      match expression

      How to handle Scala.MatchError

      Match expression: Test the type of a variable

      for loop

      for loop as expression

      for loop with if condition

      Nested for loops

      for loop works for any collection

      while loop

      do-while loop

      Lambda Expressions

      Functions

      Named Parameters

      Default values to arguments

      Varargs: Variable number of arguments

      Arrays

      Traverse an array

      ArrayBuffer

      Maps

      Iterate over a map

      Convert a map of (key, value) to map of (value, key)

      Tuple

      Classes

      How to define a constructor?

      Infix notation of methods

      How to define static methods and singletons

      Companion Object

      Statements in the class body gets executed while initializing an instance

      Hello World project in Eclipse

      Packages

      Inheritance

      Traits

      Emptiness

      Operators are methods

      functions

      Currying

      Create java.lang.Object instance

      to method

      Working with BigInt

      Method without parameters do not require () while calling

      apply method can be called without name

      Get square root of numbers from 1 to 10

      Get permutations of a string

      Convert integer to character

      Convert character to integer

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