Cumulative

[Steve Teale]

On Tuesday, 25 February 2014 at 03:13:23 UTC, Shammah Chancellor 
wrote:
> So far as I'm understanding this thread,  Steve Teale is asking 
> for a way to inject code before and after a call to a function 
> from other places in the program.   E.g. Write some function 
> foo, write some function bar, and specify that any time foo is 
> called, bar should be called immediately after *automagically*.
>
> The reason this hasn't been done in any language I'm aware of 
> is because you can solve the same problem using existing 
> polymorphism, and it's a horribly awful design practice to have 
> hidden code like that.
>
>
It's a bit more specific than 'from other places in the program', 
and anyway, once you've accepted virtual functions, you've 
accepted 'automagic' ;=)

I'm writing a little example program that illustrates what I'm 
getting at, and I'll post it somewhere when I'm through.

Steve