Re: Depth indexing of nil

[Scott Morgan <blumf@...>]

On 09/07/15 02:10, Simon Green wrote:
> if a.b.c.d.e == something then something-else end
> 
> only works if everything down to e exists. If anything else doesn’t,
> then Lua spits the dummy and tells me I’m indexing a nil value. This
> is technically correct, but actually, I don’t care.

This is my biggest problem with Lua, makes working with optional tables
a real pain and all the solutions have problems; debug.setmetatable is
overkill (I think most people only want this on some table accesses, not
all), and the others are clunky at best.

It was proposed a while back adding an extra operator for safe indexing,
something like a?b?c?d I forget the conclusion of that debate, but would
like to petition for something along those lines.

Scott