Re: Using lexical environments (was setfenv/getfenv)

[Tony Finch <dot@...>]

On Tue, 12 Jan 2010, Nevin Flanagan wrote:
>
> My biggest concern remains the challenge of getting values in or out of
> an "in" block. Right now the only ways to get a value out are to either
> extract it from the environment table or create a local before the block
> where it can leave its result; is there any hope for a way to pass
> values in and out via the stack, much as coroutine.resume and
> coroutine.yield do?

What's wrong with wrapping the block in a function?

> This would also help us solve the problem of wrapping code that is not
> informed about a specialized environment but expects arguments:

How about

	in (...) do return (function (...)
		body
	end)(select(2, ...)) end

Tony.
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