How to convert a HashSet to a Set in Kotlin

How to convert a HashSet to a Set in Kotlin.

Here's a step-by-step tutorial on how to convert a HashSet to a Set in Kotlin.

1. Create a HashSet instance:

   val hashSet = HashSet<String>()

2. Add elements to the HashSet:

   hashSet.add("apple")
   hashSet.add("banana")
   hashSet.add("orange")

3. Convert the HashSet to a Set using the toSet() function:

   val set: Set<String> = hashSet.toSet()

   The toSet() function creates a new immutable Set instance from the elements of the HashSet.

4. Access the elements in the converted Set:

   for (element in set) {
       println(element)
   }

   This will print:

   apple
   banana
   orange

   You can now work with the converted Set just like any other Set in Kotlin.

Alternatively, you can directly convert a HashSet to a Set using the HashSet constructor when creating the Set:

val set: Set<String> = HashSet(hashSet)

This approach is useful when you need to perform conversions in a single line of code.

Remember that the converted Set will be immutable. If you need a mutable Set, you can use the toMutableSet() function instead of toSet().

That's it! You have successfully converted a HashSet to a Set in Kotlin.