What is the Set : setOf() method in Kotlin?
The setOf() method in Kotlin is used to create an immutable set. An immutable set is read-only and its elements cannot be modified.
Syntax
The setOf() method can be declared as shown in the code snippet below:
fun <T> setOf( vararg elements: T): Set<T>
elements: The elements to be added to the set.
Return value
The setOf() method returns an immutable set containing the specified elements.
Example
Consider the code snippet below, which demonstrates the use of the setOf() method.
fun main(args: Array<String>) {val set1 = setOf("a", "b", "c")println("set1: " + set1)val set2 = setOf(1, 2, 3)println("set2: " + set2)}
Explanation
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Line 3-4: The
setOf()method is used in line 3 to create an immutable set of the three characters declared as parameters. The three characters declared as parameters are the elements of the setset1. -
Line 6-7: The
setOf()method is used in line 6 to create an immutable set of the three integers declared as parameters. The three integers declared as parameters are the elements of the setset2.
