Scala Tutorial

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SYNTAX: ................................................................................................. 34 EXAMPLE: .............................................................................................. 34 The if...else if...else Statement: ............................................................... 35 SYNTAX: ................................................................................................. 35 EXAMPLE:............................................................................................... 35 Nested if...else Statement: ...................................................................... 36 SYNTAX: ................................................................................................. 36 EXAMPLE:............................................................................................... 36 Scala Loop Types .................................................................. 37 while loop ................................................................................................ 38 Syntax: .................................................................................................... 38 Flow Diagram: ......................................................................................... 38 Example: ................................................................................................. 39 do…while loop ......................................................................................... 39 Syntax: .................................................................................................... 39 Flow Diagram: ......................................................................................... 40 Example: ................................................................................................. 40 for loop .................................................................................................... 41 The for Loop with Ranges ....................................................................... 41 Example: ................................................................................................. 41 The for Loop with Collections .................................................................. 42 Example: ................................................................................................. 43 The for Loop with Filters .......................................................................... 43 Example: ................................................................................................. 43 The for Loop with yield: ........................................................................... 44 Example: ................................................................................................. 44 Loop Control Statements: ........................................................................ 45 break statement ....................................................................................... 45 Syntax: .................................................................................................... 45 Flow Diagram: ......................................................................................... 46 Example: ................................................................................................. 46 Breaking Nested Loops: .......................................................................... 47 Example: ................................................................................................. 47 Infinite Loop: ............................................................................................ 48 Scala Functions ..................................................................... 49 Function Declarations: ............................................................................. 49 Function Definitions: ................................................................................ 49 Calling Functions: .................................................................................... 50 Scala Closures ....................................................................... 57 TUTORIALS POINT Simply Easy Learning
Scala Strings .......................................................................... 58 Creating Strings: ...................................................................................... 58 String Length: .......................................................................................... 59 Concatenating Strings: ............................................................................ 59 Creating Format Strings: ......................................................................... 60 String Methods: ....................................................................................... 60 Scala Arrays ........................................................................... 64 Declaring Array Variables: ....................................................................... 64 Processing Arrays: .................................................................................. 65 Multi-Dimensional Arrays: ........................................................................ 66 Concatenate Arrays: ................................................................................ 66 Create Array with Range: ........................................................................ 67 Scala Arrays Methods: ............................................................................ 68 Scala Collections.................................................................... 69 Basic Operations on List: ......................................................................... 70 Concatenating Lists: ................................................................................ 71 Creating Uniform Lists: ............................................................................ 72 Tabulating a Function: ............................................................................. 72 Reverse List Order: ................................................................................. 72 Scala List Methods: ................................................................................. 73 Basic Operations on Set: ......................................................................... 76 Concatenating Sets: ................................................................................ 76 Find max, min elements in Set: ............................................................... 77 Find common values in Sets:................................................................... 77 Scala Set Methods: ................................................................................. 78 Basic Operations on Map: ....................................................................... 81 Concatenating Maps ................................................................................ 81 Print Keys and Values from a Map: ......................................................... 82 Check for a Key in Map: .......................................................................... 82 Scala Map Methods: ................................................................................ 83 Iterate over the Tuple: ............................................................................. 86 Convert to String: ..................................................................................... 87 Swap the Elements: ................................................................................. 87 Using getOrElse() Method: ...................................................................... 88 Using isEmpty() Method: ......................................................................... 89 Scala Option Methods: ............................................................................ 89 Find Min & Max valued Element: ............................................................. 91 Find the length of the Iterator:.................................................................. 91 Scala Iterator Methods: ........................................................................... 92 TUTORIALS POINT Simply Easy Learning
Page 1 and 2: Scala Tutorial
Page 3 and 4: ABOUT THE TUTORIAL Scala Tutorial S
Page 5: FLOATING POINT LITERALS ...........
Page 9 and 10: CHAPTER 1 Scala Overview Scala, sho
Page 11 and 12: CHAPTER 2 Scala Environment Setup T
Page 13 and 14: $scala -version Scala code runner v
Page 15 and 16: } * This will print 'Hello World' a
Page 17 and 18: forSome If implicit import Lazy Mat
Page 19 and 20: CHAPTER 4 Scala Data Types Scala ha
Page 21 and 22: Characters must not necessarily be
Page 23 and 24: Variable Type Inference: When you a
Page 25 and 26: The access to f in class Sub is OK
Page 27 and 28: var a = 10; var b = 20; var c = 25;
Page 29 and 30: } } println("a && b = " + (a&&b) );
Page 31 and 32: a >>> 15 C:/> Assignment Operators:
Page 33 and 34: Here, operators with the highest pr
Page 35 and 36: } If the boolean expression evaluat
Page 37 and 38: Nested if...else Statement: It is a
Page 39 and 40: while loop do...while loop for loop
Page 41 and 42: Flow Diagram: Example: object Test
Page 43 and 44: When the above code is compiled and
Page 45 and 46: } } // for loop execution with mult
Page 47 and 48: Flow Diagram: Example: import scala
Page 49 and 50: Infinite Loop: A loop becomes infin
Page 51 and 52: } } return sum A function, which do
Page 53 and 54: When the above code is compiled and
Page 55 and 56: } When the above code is compiled a
Page 57 and 58:
} logWithDateBound("message1" ) log
Page 59 and 60:
CHAPTER 12 Scala Strings Consider t
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} } var str2 = "Tod"; println("Dot
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23 24 25 26 27 28 29 30 31 32 33 34
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CHAPTER 13 Scala Arrays Scala provi
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C:/> Multi-Dimensional Arrays: Ther
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C:/> Scala Arrays Methods: Followin
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Scala Lists Scala Lists are quite s
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Creating Uniform Lists: You can use
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13 14 15 16 17 18 19 20 21 22 23 24
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var s = Set(1,3,5,7) While defining
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C:/> Scala Set Methods: Following a
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elements. 38 39 40 41 42 43 44 45 4
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use two maps with ++ as method colo
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11 12 13 14 15 16 17 18 19 20 21 22
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val t = new Tuple3(1, "hello", Cons
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The method will return Some[Person]
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6 7 8 9 10 11 12 13 14 def filter(p
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Scala Iterator Methods: Following a
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38 39 40 41 42 43 44 45 46 47 48 49
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CHAPTER 15 Scala Classes & Objects
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} } println ("Point y location : "
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CHAPTER 16 Scala Traits A trait enc
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CHAPTER 17 Scala Pattern Matching P
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} // case class, empty one. case cl
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} When the above code is compiled a
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[0-9] Match any digit; same as [012
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CHAPTER 19 Scala Exception Handling
Page 113 and 114:
CHAPTER 20 Scala Extractors An extr
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CHAPTER 21 Scala Files I/O Scala is
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Scala Tutorial

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