On Wed, May 11, 2016 at 9:26 AM, Viacheslav Usov <via.usov@gmail.com> wrote:
On Tue, May 10, 2016 at 7:00 PM, Sean Conner <sean@conman.org> wrote:
I think he wants something like:
global x -- define a global x
function foo(a,b)
local c -- define a local variable
c = a * b + y -- compile time error---y not defined
end
I am not exactly sure. The more I think about it, the more convinced I am
that, in principle, it is enough for the explicit mode to remove the current
syntactic sugar that converts anything not defined as a local into a global
table lookup. This will eliminate the silent promotion of mistyped locals
into globals, and the need to type the ugly _ENV will always be a reminder
for users that globals are not exactly cheap.
But I am not going to insist on that.
Cheers,
V.
Hi,
you can use luacheck as a library and filter warnings to keep only
warnings about global variables. For example, you don't want "unused
variable" warning, but want only "using global" warnings - it is easy
to implement.
By the way, without any globals, how can one use normal globals like
"print", "math" etc? Always declaring them is annoying.