Re: [ANN] Lua 5.3.0 (alpha) now available

On Thu, Jul 31, 2014 at 1:30 PM, Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br> wrote:

Lua 5.3.0 (alpha) is now available for testing at
http://www.lua.org/work/lua-5.3.0-alpha.tar.gz

MD5 2922a0c3b64c8a2f678d2510b7a5a336 -
SHA1 b2f86c16a38310c9e240c70216618308097444f6 -

This is an alpha version. Some details may change in the final version.

The main change in Lua 5.3.0 is the introduction of integers. See also
http://www.lua.org/work/doc/#changes

The complete diffs are available at
http://www.lua.org/work/diffs-lua-5.3.0-work3-alpha.txt

All feedback welcome. Thanks.
--lhf

Yay!

I read through the definition of "table.copy" and I don't grasp it. I assume that the updated reference isn't complete. The definition is:

table.copy (a1, f, e, [a2,] t)

Reading the text, I think that:

a1 is source

a2 is target. if a2 is missing then a1 is used.

t is the target index's start, such that the first index to be copied. (shouldn't this default to 1 or f?)

f is "first"?

e is "end"?

so:

table.copy(source, 1, 10, destination, 5)

would copy index 1 ... 10 into the table 'destination', starting at index 5

Is that correct? Is this interface mimicking some pattern that I haven't seen before? I didn't find this easy to read or understand.

-Andrew