what is the point of functor ?

[Steven Schveighoffer]

On 6/22/18 2:25 PM, Ali Çehreli wrote:
> On 06/22/2018 08:17 AM, Steven Schveighoffer wrote:
> 
>  > reason to use functors
> 
> I wonder whether they are more efficient because a functor would carry 
> just the state that it needs. Also, there is no GC memory allocation 
> unless the programmer wants to.
> 
> I wonder how much state is allocated for a delegate?

If it's not a closure, then none. It just uses the stack frame.

Most of the time you would just use an alias instead of a functor or a 
delegate.

-Steve