In what situations in Kotlin is it recommended to use the inline keyword for lambda expressions?

In Kotlin, the keyword inline is applied to functions, especially to functions with lambda expressions, to reduce call overhead and improve performance.

It is recommended to use inline in the following situations:

• When a function takes lambda expressions as parameters, and you want to avoid creating additional objects and function calls at runtime.
• For functions that are called frequently and where performance is important.

Example:

inline fun performOperation(operation: () -> Unit) {
    println("Before operation")
    operation()
    println("After operation")
}

fun main() {
    performOperation {
        println("Executing operation")
    }
}

Here, the compiler "inserts" the body of the performOperation function directly at the call site, reducing overhead.

However, avoid using inline for large functions, as it can increase the size of the compiled code.