table.pack()
[
Date Prev][
Date Next][
Thread Prev][
Thread Next]
[
Date Index]
[
Thread Index]
- Subject: table.pack()
- From: Alexander Gladysh <agladysh@...>
- Date: 2010年1月22日 21:59:12 +0300
Hi, list!
I'm glad table.pack() is here, as it is one of the functions I always
write myself.
5.2 pack() could be defined as follows:
function pack(...)
return { n = select("#", ...), ... }
end
We need to store number of arguments, to be able to call unpack()
safely if arguments contain nils (or table size definition will get
us).
Today I looked at my code, and realized that my pack has slightly
different protocol:
function pack(...)
return select("#", ...), { ... }
end
Note that it is probably better to swap size and table:
function pack(...)
return { ... }, select("#", ...)
end
So user who do not need size, would not be forced to create a variable for it:
local t = pack(...)
I do not argue for this protocol just because it is mine — it is not a
problem to switch to a new one.
That being said, I wonder, which one is better and why... What do you think?
Alexander.