MAPOF() - FUNCTION

Using the mapOf() method, we can create an immutable Map(i.e. A read only Map).

Example :

fun main() {
    var x = mapOf(5 to "Is a Number", "John" to "Is a Name", "Kotlin" to "Is a Language")
    println(x)
}

Output :

{5=Is a Number, John=Is a Name, Kotlin=Is a Language}

So, in the above code we have created a Map using mapOf() method. And the values are represented in Key and Value pairs.

The Key is a number or a String and in the value we have provided its explanation(Somewhat like the English Dictionary).

i.e. We know that the first element 5 is a number. So, in the Key, we have put the number 5 and in its value, we have put the explanation, Is a Number. Same logic is applicable for the other two Keys, John and Kotlin.

A Key and Value is separated by keyword to.

var x = mapOf(5 to "Is a Number", "John" to "Is a Name", "Kotlin" to "Is a Language")

And initialised to the variable x.

And in the next line we have printed the Map using the print statement.

println(x)

Now, if we see the output,

Output :

{5=Is a Number, John=Is a Name, Kotlin=Is a Language}

The output contains Key and Value separated by =.

But just remember, while we declare a Map, the Key and Value is separated by keyword to.

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