Re: Lua, LuaJIT2 and differences with the length operator

[Greg Falcon <veloso@...>]

On Tue, Jan 4, 2011 at 1:02 PM, Leo Razoumov <slonik.az@gmail.com> wrote:
> I am fine with the way #t operator is defined. It is logical and
> consistent. My problem is different. I cannot see a good way to tell
> when it is safe to trust #t and when not (longing for table.has_holes
> test)

The only way to test if a table has holes is to walk it.  So if you
just want to know if you can trust the answer of #t, call table.maxn()
instead.  It takes just as long as table.has_holes() would, and it
gives you the answer you're looking for as well.

Greg F