Mastering Kotlin

Searching

The Kotlin standard library provides a variety of functions for picking items out of a collection. These include functions such as find(), first(), and last(). Let's take a look at a few of these functions:

• Let's look at the following example using the first() function:

val list = listOf("Kotlin", "Java", "Swift", "K")val item = list.first()println(item)

Running this code will print out "Kotlin".

• Or, we could use the last() function:

val list = listOf("Kotlin", "Java", "Swift", "K")val item = list.last()println(item)

This time, the code will print out "K".

• What if we want to take more than one item out of a collection? For this, we can use the take() function:

val list = listOf("Kotlin", "Java", "Swift", "K")list.take(2)