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CHAPTER 8 <strong>Scala</strong> IF…ELSE Statements Following is the general form of a typical decision making IF...ELSE structure found in most of the programming languages: The if Statement: An if statement consists of a Boolean expression followed by one or more statements. SYNTAX: The syntax of an if statement is: if(Boolean_expression) { // Statements will execute if the Boolean expression is true TUTORIALS POINT Simply Easy Learning
} If the boolean expression evaluates to true, then the block of code inside the if statement will be executed. If not, the first set of code after the end of the if statement (after the closing curly brace) will be executed. EXAMPLE: object Test { def main(args: Array[String]) { var x = 10; } } if( x < 20 ){ println("This is if statement"); } This would produce the following result: C:/>scalac Test.scala C:/>scala Test This is if statement C:/> The if...else Statement: An if statement can be followed by an optional else statement, which executes when the Boolean expression is false. SYNTAX: The syntax of a if...else is: if(Boolean_expression){ //Executes when the Boolean expression is true }else{ //Executes when the Boolean expression is false } EXAMPLE: object Test { def main(args: Array[String]) { var x = 30; } } if( x < 20 ){ println("This is if statement"); }else{ println("This is else statement"); } This would produce the following result: C:/>scalac Test.scala C:/>scala Test TUTORIALS POINT Simply Easy Learning
Page 1 and 2: Scala Tutorial
Page 3 and 4: ABOUT THE TUTORIAL Scala Tutorial S
Page 5 and 6: FLOATING POINT LITERALS ...........
Page 7 and 8: Scala Strings .....................
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: Here, operators with the highest pr
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
Page 61 and 62: } } var str2 = "Tod"; println("Dot
Page 63 and 64: 23 24 25 26 27 28 29 30 31 32 33 34
Page 65 and 66: CHAPTER 13 Scala Arrays Scala provi
Page 67 and 68: C:/> Multi-Dimensional Arrays: Ther
Page 69 and 70: C:/> Scala Arrays Methods: Followin
Page 71 and 72: Scala Lists Scala Lists are quite s
Page 73 and 74: Creating Uniform Lists: You can use
Page 75 and 76: 13 14 15 16 17 18 19 20 21 22 23 24
Page 77 and 78: var s = Set(1,3,5,7) While defining
Page 79 and 80: C:/> Scala Set Methods: Following a
Page 81 and 82: elements. 38 39 40 41 42 43 44 45 4
Page 83 and 84: 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
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CHAPTER 20 Scala Extractors An extr
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CHAPTER 21 Scala Files I/O Scala is
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