Kotlin hashSetOf()

In Kotlin, hashSetOf() is a function that creates a new HashSet and initializes it with the specified elements. In this tutorial, we'll discuss how to use the hashSetOf() function to create and initialize a HashSet in Kotlin.

Syntax

The syntax for using hashSetOf() function in Kotlin is:

val set = hashSetOf(element1, element2, ..., elementN)

Here, set is the name of the new HashSet that you want to create, and element1 to elementN are the elements that you want to initialize your set with.

Example

Let's take an example to see how hashSetOf() works in Kotlin:

fun main() {
    val fruits = hashSetOf("Apple", "Banana", "Grapes")
    println(fruits)
}

Output:

[Apple, Banana, Grapes]

In this example, we've created a new HashSet called fruits and initialized it with three elements: "Apple", "Banana", and "Grapes". The println() function then prints out the contents of the HashSet.

Explanation

The hashSetOf() function creates a new HashSet and initializes it with the specified elements. A HashSet is a collection that contains no duplicate elements and is unordered.

Unlike an array or a list, sets do not have a specific order for their elements and can only contain unique elements. Therefore, the HashSet is a useful data structure for storing a collection of unique values.

Use

The hashSetOf() function is useful when you need to create a new HashSet and initialize it with a specific set of elements.

This function provides an easy and concise way of initializing the elements of a new HashSet.

Important Points

• The hashSetOf() function returns a new HashSet object.
• HashSet is a collection that contains no duplicate elements and is unordered.
• The elements in a HashSet must be unique.

Summary

In this tutorial, we learned about the hashSetOf() function in Kotlin. We discussed its syntax, examples, output, explanation, use, and important points.

The hashSetOf() function is a useful way of creating and initializing a HashSet in a single line of code. This makes it easy to work with sets in Kotlin and eliminates the need for additional code to initialize a new HashSet.