Kotlin has simple funtions to initialize collections. The following line of code shows an example of initializing a list:
val countries = listOf("India", "China", "USA")
The following code snippet shows some of the important operations that can be performed on a list:
println(countries.size)//3 println(countries.first())//India println(countries.last())//USA println(countries[2])//USA
Lists, created with listOf, are immutable in Kotlin. To be able to change the content of a list, the mutableListOf function needs to be
//countries.add("China") //Not allowed val mutableContries = mutableListOf("India", "China", "USA") mutableContries.add("China")
The mapOf function is used to initialize a map, as shown in the following code snippet: ...
