API Shakeup: user data (was Re: [cairo] Patch improving fallbacks)

[Keith Packard]

Around 15 o'clock on Feb 24, Owen Taylor wrote:

> Do you know of any examples of libraries that don't swallow the
> * inside function typedefs? I can't think of ever seeing that,
> to the point I had to try it out to be sure that:

I agree that function arguments should include the pointer; C doesn't have 
first-class functions, so they work like arrays:

	typedef int (*foo) (int);

	int bletch ();

	foo x = bletch;

So, we pretend that pointers to functions are actually functions and get 
on with life.

-keith


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