Kotlin: how can i create a singleton using the `object` keyword?

Example:

// Trying to define a singleton
class Singleton {
    fun show() {
        println("This is a singleton")
    }
}

Solution:

// Proper singleton using `object` keyword in Kotlin
object Singleton {
    fun show() {
        println("This is a singleton")
    }
}

In Kotlin, singletons can be easily created using the `object` declaration, which ensures there's only one instance of the class.