Mastering Kotlin Essentials/

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Set Operations

Set Operations

Explore set operations including duplicate removal, emptiness checks, and element searches.

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Removing duplicates

The most efficient way to remove duplicates from a list is by transforming it into a set.

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Kotlin 1.5
fun main() {
    val names = listOf("Jake", "John", "Jake", "James", "Jan")
    println(names) // [Jake, John, Jake, James, Jan]
    val unique = names.toSet()
    println(unique) // [Jake, John, James, Jan]
}

Checking set size

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