In the following example, we will traverse through the 'Subject' array and we will print the index along with the value. forEachIndexed is an inline function which takes an array as an input and its index and values are separately accessible. Nstead of using forEach() loop, you can use the forEachIndexed() loop in Kotlin. In this article, we will see how we can access the index of an array in Kotlin while using forEach loop. We use let in Swift.Ĭonst val constants which are assigned at compile time.Sometimes it becomes necessary to access the index of an array. Var number:float = 5.45 // Gives error as by default decimals are interpretted as double. Var number = 5.45 // Interpreted as Double

We can explictly do this by giving the type name Var text = 'hello' // Here Kotlin finds out text is of String type. Var for variable, which is mutable and can be re-assigned. While converting all my java code to kotlin, one of the strange syntax change I observed was the for loop in both the languages. Supports functional programming ( eg:Lambda functions) REPL : Similar to Swift REPL, Kotlin also have an REPL where in which we can try out expressions. Interoperable : Interoperable with Java and Android libs (In Kotlin, the type system distinguishes between references that can hold null and those that cannot.) Type interpretation is also present for some types.

Safe: Exceptions are caught at compile time. (Type of a variable is known at compile time.) Kotlin is a statically typed programming language from JetBrains. Now Kotlin is officially announced for Android, I thought of getting started and below is my learnings, as an iOS developer, I am writing a comparison also whereever required.

Android kotlin for loop with index