When will I ever use table.pack()
and table.unpack()?
or do I not use them at all?
When will I ever use table.pack()
and table.unpack()?
or do I not use them at all?
As much as I know, table.pack() is used for converting a data into JSON code, so it can be used when you want to serialize things, and use table.unpack to convert it back into a Lua Table and deserialize it.
It just appears to add stuff into a table while adding the index for the number of stuff, and remove stuff from the table.
I know this is an awkward answer, but you will use them when you need them
Their purposes is to convert arrays to and from variadics.
If a function returns a tuple with an unknown number of items, you should pack it into a table not to lose any data. You can also pack variadics to get a specific element.
Here is an example:
function x()
return 1, 2, 3, 4
end
local packed = table.pack(x())
print(x) -- {1, 2, 3, 4}
print(#x) -- 4
print(x[3]) -- 3
print(table.maxn(table.pack(1,nil,nil,nil,nil,456))) -- 6
print(table.unpack({"Hello", nil, 123})) -- Hello 123
When you do encounter this problem, they will become very useful. If you don’t see a need for it, don’t use it!
More info here: Lua 5.3 Reference Manual
Stop using ChatGPT. If you didn’t use ChatGPT, then at least fact-check your information before you post misinfo online.
EDIT: Maybe you mean string.pack? But that doesn’t serialize to JSON…
EDIT: User has stated they did not use ChatGPT, just misinformed.
Ah, that makes sense.
Speaking of this, dont you have to encode it using HttpService
for it to be JSON?
Yes. Which is also a Roblox service and has nothing to do with built-in Lua(u)
What ? ChatGPT ??? I wrote this on my own dude. Don’t put wrong allegations. Also, I wrote “As much as I know”, so I clearly stated I maybe wrong. But think before putting wrong allegations. And atleast ChatGPT can give the answer right, but I wrote it on my own. Sorry I may got rude here, but still I wrote on my own, this is the real fact.
nah.
My apologies. In hindsight, it is quite obvious thay you didn’t use ChatGPT but I’ve seen it so commonly used by trolls I assumed you were one.
Anyway, I apologize for this and I will edit my initial post.
Sorry for the bother.
EDIT: Removed unnecessary “justification” on my part
I actually can’t get more usage of it, because it’s obvious that when you need it, use it, it don’t have much applications I guess, it’s just convert arrays into varadics as stated by @majdTRM
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