Higher order functions

Definition

• Higher-order functions are the ones that take functions as parameters or return function as a result.
• We can even store the higher-order function in a variable and a data structure.
• They enable functional programming concepts and allow you to write more concise and expressive code.

Declaring Functions

• Functions in kotlin have a type
• The same way as we can declare Int,String,Person we can declare something of type function
• A type is composed of FunctionParameters + FunctionReturnType (Parameters are declared within these brackets) --> ReturnType

Contents

• kotlin literals
• Lamda Expression
• Passing function as parameter
• Returning Function