Can someone explain what these are used for?
so ive made this small random number thingy, and ive noticed that when i print whats in the table i always have to put a 1 in it, and i have to use this symbol (#).
can someone explain what the purpose of the one is for, and what the # symbol is for, and what it does?
here the script
`` myt = {1,2,3,4,5,6,7,8,9} rng = Random.new()
myt = {1,2,3,4,5,6,7,8,9}
rng = Random.new()
print(rng:NextInteger(1,#myt))
3 answers
It gets the length of the table.
For instance:
local tab = {1, 2 , 5. "yes"} --4 items
print(#tab) --> prints 4
The reason why you needed that is because so you can use randomness properly. If we need to get the number of things in a table then have the first parameter for Random.new() be 1, and then you could print a random value in the table
You can store the #table value in a variable too.
local tab = {1, 2 , 5. "yes"} --4 items
local tabLength = #tab
print(tablLength) --> print 4
You can also use the # operator on strings, I'm not sure why but it works for a random reason. there is a str.length function though and it is advised to use that instead.
So the 1 is the minimum for the random and the #myt is the max.
The # symbol is used for getting the length of something. It can be a string, a talbe, etc.
Example:
test = "test" print(print(#test)) -- >>>> 4
If you look at the DevHub for the Random datatype, you can see all the functions that come with it. (https://developer.roblox.com/en-us/api-reference/datatype/Random) If you look at the Random:NextInteger() function you can see it requires a minimum and a maximum, which is what you are supplying when you say...
print(rng:NextInteger(1,#myt))
As for the # symbol, that will give you the length of an array. The length of your myt array is 9.
local a = {1,2,3}
print(#a) -- 3
local b = "hello"
print(#b) -- 5