Have you read about inline operators in Kotlin?

In Kotlin, the keyword inline is used for functions to have the compiler insert the function body directly at the call site instead of a regular call by reference.

This reduces the overhead of function calls, especially useful for higher-order functions (accepting lambda expressions), as it avoids creating additional objects and calls.

Example:

inline fun measureTime(block: () -> Unit) {
    val start = System.currentTimeMillis()
    block()
    val end = System.currentTimeMillis()
    println("Time taken: ${end - start} ms")
}

fun main() {
    measureTime {
        // code to measure time
        println("Hello")
    }
}

Advantages of inline functions:

• Reduces call overhead.
• Allows using return from the lambda passed to the inline function.

However, excessive use of inline can increase the size of the compiled code.