On Thu, May 20, 2010 at 18:15, Roberto Ierusalimschy
<roberto@inf.puc-rio.br> wrote:
Not necessarily. If the function is a main function (that is, the direct
is always present. Other functions have _ENV just like any other upvalue.
For instance, consider the following code:
local a
function foo ()
return a + b
end
In function foo, the first upvalue is 'a' and the second is '_ENV'.
Why isn't it always the first upvalue? It would make things easier if one wants to play with the environment...
-- Pierre-Yves
