Mastering High Performance with Kotlin

Stacks

A stack is a data structure that's built on the last in, first out (LIFO) principle and allows you only to insert or delete an item at the top of the stack:

Once you're familiar with this data structure, we can get to the concept of the thread stack. Let's look at the following example:

fun main(args: Array<String>) {        val value = 3    blockTop(value)}fun blockTop(value: Int) {    }

When this program starts, a stack for the main thread is created. This stack will contain a block for the main function when the program enters the scope of the main function:

When the main function invokes the blockTop function, a new block is pushed to the ...