Re: Has Lua reached perfection?

[Sean Conner <sean@...>]

It was thus said that the Great Paige DePol once stated:
> 
> I still need to learn more about co-routines, I get what they are but I
> don't think the entire concept of when and how to use them has clicked
> quite yet. 

  A good example would be event programming for a network based server. 
Each "connection" or "request" can be handled by a co-routine.  The examples
I have are rather large, but generally, they look like (very pseudocodeish
here, even for Lua):

	function handler(remote,data)
	  do_something_that_doesnt_block(data)
	  remote,data = coroutine.yield(remote,data)
	  do_something_else(remote,data)
	  runnable[remote] = nil
	end

	function mainloop(socket)
	  data,raddr = socket:read()

	  if newrequest(data) then
	    co = coroutine.create(handler)
	    runnable[raddr] = co
	  else
	    coroutine.resume(runnable[raddr],raddr,data)
	  end
	  return mainloop(socket)
	end

At least, that's how the code I've written has been generally structured
(although more verbose).  

> That said, I would love to see if it would be possible to
> implement a version of libdispatch (Grand Central Dispatch in macOS)
> to Lua along with creating "blocks" of code... which are really just
> closures with slightly different upvalue scope rules if I recall.

  I don't see why not.  

  -spc (And I don't even know what Grand Central Dispatch is)