inline function members inside a class

Question

I know that declaring a function (normal function not a method inside a class) as inline is a good practice when the function definition is small for performance and it save

Answer 1

Specifying a function/procedure as inline inside a class is hinting to the compiler that instead of creating code to call the function and pass parameters, the contents of the function should be placed at the point of call.

It can improve performance of the compiled binary when it becomes more efficient to execute the function without having to pass parameters. It can also be a detriment to performance because repeating the code that would have been in the function at every call location can cause bloat which lessens the liklihood that your code will be found in faster cache memory.