Re: 5.2 and 5.1

[steve donovan <steve.j.donovan@...>]

On Wed, Apr 10, 2013 at 9:03 AM, Dirk Laurie <dirk.laurie@gmail.com> wrote:

> However, using it for namespacing ties one to 5.2 prematurely.
How about giving us a little example?

-- new style Lua 5.2 module

local _ENV = {}

function answer() return 42 end

return _ENV

By replacing the {} with a suitable function which does some setfenv magic on 5.1 we can get it to fly both ways, I will grant you. _ENV then has no special significance.

If that function then modified packaged.loaded then we could do without the dangling return _ENV on 5.2 as well.

But why not just

local M = {}

function M.answer() return 42 end

return M

?