This tutorial will introduce you to Kotlin Functions. The tutorial further teaches Function Parameters, Function returning values and Kotlin functions with no return type. You will understand Higher-order Functions and Lambda Functions. Finally, you will get to know Higher-order Functions with the Lambda Function.

2. What’s in it for you ?
Lambda functions
Higher order functions with lambda functions
Kotlin Functions
Function parameters
Function returning values
Kotlin functions with no return type
Higher order functions
Lambda functions
Higher order functions with lambda functions

3. Kotlin Functions
A Kotlin function can be defined as the block
of code, which is used to hold data or
information.
The Kotlin functions are defined with the fun
keyword.
fun keyword
Name of the
function

4. Kotlin Functions
A Kotlin function is used to divide a program into
small modules.
A function can easily be invoked by making a call,
and to make a call we use the name of the
function with parentheses.
Function
call to info
function

5. Function parameter
Functions can also accept the data or
information passed to them.
The information or data is passed in the form
parameters.
These parameters are specified after the name
of the function.
Arguments (a,b,c) are
getting passed to the
function parameters
Function parameters

6. Function returning values
A function can also return values, to return
a value or values, return keyword is used.
After the function parentheses the return
type is specified.
Return type of
the function
Return keyword

7. Kotlin function with no return type
In Kotlin, if the function is not returning anything then we
don’t need to specify any return type.
Still if we want to mention the return type, then we can
add Unit as the return type

8. Higher order functions
Higher order function in Kotlin is a function that can accept the function
as a parameter or can also return a function.
fname is the name of the function.
(Int, Int) represents the function accepting two arguments

9. Lambda functions
Lambda function can be defined as a short way of writing a function.
Lambda function doesn’t have any name and it is written with curly braces {}.
Syntax: Variable -> Function body

10. Higher order function with Lambda function
Instead of
passing the
normal function
we can write
the lambda
function