What do you understand about function extension in the context of Kotl

1.	What do you understand about function extension in the context of Kotlin? Explain.
Answer» In Kotlin, we can add or delete method functionality using extensions, even without inheriting or ALTERING them. Extensions are statistically resolved. It provides a callable function that may be INVOKED with a dot operation, rather than altering the existing class. Function Extension - Kotlin ALLOWS users to specify a method outside of the main class via function extension. We'll see how the extension is implemented at the functional level in the following example: // KOTLINclass Sample { var STR : String = "null" fun printStr() { print(str) } }fun main(args: Array<String>) { var a = Sample() a.str = "Interview" var B = Sample() b.str = "Bit" var c = Sample() c.str = a.add(b) c.printStr()}// function extensionfun Sample.add(a : Sample):String{ var temp = Sample() temp.str = this.str + " " +a.str return temp.str} Output:- Interview Bit Explanation:- We don't have a method named "addStr" inside the "Sample" class in the preceding example, but we are implementing the same method outside of the class. This is all because of function extension.

What do you understand about function extension in the context of Kotlin? Explain.

Answer»

In Kotlin, we can add or delete method functionality using extensions, even without inheriting or ALTERING them. Extensions are statistically resolved. It provides a callable function that may be INVOKED with a dot operation, rather than altering the existing class.

Function Extension - Kotlin ALLOWS users to specify a method outside of the main class via function extension. We'll see how the extension is implemented at the functional level in the following example:

// KOTLINclass Sample { var STR : String = "null" fun printStr() { print(str) } }fun main(args: Array<String>) { var a = Sample() a.str = "Interview" var B = Sample() b.str = "Bit" var c = Sample() c.str = a.add(b) c.printStr()}// function extensionfun Sample.add(a : Sample):String{ var temp = Sample() temp.str = this.str + " " +a.str return temp.str}

Output:-

Interview Bit

Explanation:-

We don't have a method named "addStr" inside the "Sample" class in the preceding example, but we are implementing the same method outside of the class. This is all because of function extension.

What do you understand about function extension in the context of Kotlin? Explain.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment