Is there a need to use the inline keyword for a function that does not use lambda expressions?

In Kotlin, the keyword inline is used for functions that accept lambda expressions as parameters to avoid creating additional objects and to improve performance by directly inserting the function's code at the call site.

If a function does not use lambda expressions, the need for inline usually does not arise, as the main benefit of inline is related to lambda optimization.

However, inline can also be useful for small functions without lambdas if you want to minimize call overhead, but this is rarely critical and can increase the bytecode size.

Example:

inline fun sum(a: Int, b: Int): Int = a + b

But if the function is not small or not used with lambdas, then inline is not mandatory.