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On 07/08/14 02:46 PM, Mason Mackaman wrote:

I’m still curious about all this, but this whole time I had forgotten about ‘#str’, which I just tested and is much faster than all the other ways for whatever reason.

#str doesn't use metamethods... (or table lookups for that matter)

On Aug 7, 2014, at 12:35 PM, Mason Mackaman <masondeanm@aol.com> wrote:


So does some equivalent of "local getmetatable('').__index=_ENV.string” execute before the program starts?
On Aug 7, 2014, at 12:22 PM, Mason Mackaman <masondeanm@aol.com> wrote:


This statement is on hold while I digest Elias’ post. I hadn’t seen it when I said that.
On Aug 7, 2014, at 12:12 PM, Mason Mackaman <masondeanm@aol.com> wrote:


AHHH! but I thought the only thing the metatable did was tell Lua to get _ENV.string whenever you try to index ’str’!? Sorry if I’m being annoying, I’m just trying to understand.
On Aug 7, 2014, at 11:52 AM, Coda Highland <chighland@gmail.com> wrote:


On Thu, Aug 7, 2014 at 9:47 AM, Mason Mackaman <masondeanm@aol.com> wrote:

I think the reason I’m still confused is I’m not understanding how this works. I figured when you do str:len(), you still have to access the global ‘string’ table, because that’s what the __index metamethod is for ‘str’s metatable. In which case it would be more work. Are you saying str:len() retrieves the ‘len' function without having to get _ENV.table?

That's exactly what's being said here. Going from str to str's
metatable doesn't involve any external lookups at all.

/s/ Adam