Re: lua-5.1-alpha: length operator on tables (arrays) and nil

[Wim Couwenberg <wcou@...>]

> I don't see why 
> ... is better than arg. It introduces inconsistencies, new compound 
> structures, etc. with no immediately obvious advantages. What's so good 
> about the change?

A function invocation in 5.0.2 with 5 parameters of

    function f(...)
      -- use arg table here
    end

is between 5 to 6 times slower than the same invocation in 5.1 of

    local select = select

    function f(...)
      local n = select("#", ...)
      -- use ... and n here
    end

So, that seems to be good about this change...  :-)

--
Wim