How to create Scala function using "Def" keyword?

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Can anyone give a example how to create Scala function using def keyword?
Jul 25, 2019 in Apache Spark by Nisha
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1 answer to this question.

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Hi,

To create a Scala function, we use the keyword ‘def’. Here is the syntax you can follow:

def functionName(parameters:typeofparameters):returntypeoffunction={

//statements to be execute

}

Here you must mention the types of parameters, the type of Scala function is optional.

Now for Example:

scala> def sayhello(){

| println("Hello")

| }

sayhello: ()Unit

Now lets call it:

scala> sayhello()

Since we make this function return nothing, it returns Unit. All that this Scala function does is take no parameters and simply print Hello.

answered Jul 25, 2019 by Gitika
• 25,460 points

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