/Kotlin-LambdaExpression

Kotlin Lambda expression with example

Primary LanguageJava

Kotlin-LambdaExpression

Functions uses with and withoud Lambda

    1.  addTwoNumbers(3, 7)
    2.  addTwoNumbers(3, 7, object : MyInterface {
        override fun sum(sum: Int) {
            println("--Sum is----" + sum)
          }
        })
        
    3.  // Lambda syntax  : (arg1,arg2) -> returnType = { arg1 : DataType, arg2 : DataType -> --logic here--}
        var lambda: (Int, Int) -> Int = { x: Int, y: Int -> x + y }
        addTwoNumbers(3, 7, lambda)
        addTwoNumbers(3, 7, { x: Int, y: Int -> x + y })

    4.  var LargeStringLambda: (String, String) -> Boolean = { a: String, b: String -> a.length > b.length }
        println("--is manoj string is large ----" + LargeStringLambda("manoj", "manojbhadane"))

    5.  var LargeNumberLambda: (Int, Int) -> Int = { a: Int, b: Int -> if (a > b) a else b }
        println("--large number is among 3,7 is ----" + LargeNumberLambda(3, 7))

    6.  var myName: (String) -> Unit = { name: String -> println("My name is '$name'") }
        myName("manoj bhadane")

Functions Definitions

fun addTwoNumbers(no1: Int, no2: Int) {
    println("--Sum is----" + (no1 + no2))
}

fun addTwoNumbers(no1: Int, no2: Int, sumListener: MyInterface) {
    sumListener.sum((no1 + no2))
}

fun addTwoNumbers(no1: Int, no2: Int, myLambda: (Int, Int) -> Int) {
    var result = myLambda(no1, no2)
    println("--Sum is----" + result)
}

public interface MyInterface {
    public fun sum(sum: Int)
}

About The Author

Manoj Bhadane

Android & Backend Developer.