for i, v in pairs(Table) do
end
for i, v in ipairs(Table) do
end
for i, v in next, Table do
end
for i = 1, #Table, 1 do
end
are there more ways to loop through a table, this isn’t something I need to know. I am just really curious about this, that’s all
thanks for reading, doryu
If it is with numeric index
local Table = {}
local Current = 1
while true do
if Current == #Table then break end
print(Current, Table[Current])
Current += 1
end
and
local Table = {}
local Current = 1
repeat
print(Current, Table[Current])
Current += 1
until Current == #Table
Why can this be used instead of for? I dont know
Both cases can be used for when you will only use X amount from a table, I don’t know, you want to select 20 objects at random.
oh yea you could always do that
I’ll probably never use it anyways but at least I know it exists, thanks
Randomized iteration of array-style table.
local list = {"A", "B", "C", "D", "E", "F"} -- Some table
while #list > 0 do
local elem = table.remove(list, math.random(1, #list))
print(elem)
end
--NOTE: this method will not catch any (key, value) paired elements
--Also, after the while loop the table will be empty
Yup, there are better options, this is also using functions like RunService.Heartbeat.
oh trust me ik there are better options
interesting didn’t think about removing the values in this way, don’t know where this could be useful but interesting indeed
There’s also a couple iterator functions that I think were added a while back. Definitely weren’t available (or at least documented in the wiki) when I was first learning:
local list = {"A", "B", "C", "D", "E", "F"} -- Some table
function doPrint(i, v)
print(i, v)
end
print("--foreach--")
table.foreach(list, doPrint)
print("--foreachi--")
table.foreachi(list, doPrint)
are these still a thing in luau?
local list = {"A", "B", "C", "D", "E", "F"} -- Some table
while #list > 0 do
local i = math.random(1, #list)
local v = list[i]
table.remove(list, i)
print(i, v)
end
you can get the index and value
but not the key
Yes, by (key, value) paired elements I meant tables that had structures similar to:
mixed = {
"A",
"B",
"C" = {1,2,3,4}
}
Technically string element “A” is at index (or key) 1 (mixed[1]); the same goes for string element “B” (mixed[2]), however that while loop would have no idea about the existence of key “C” since it exists at mixed["C"] – and the ‘#’ operator does not include non-array indexed elements in its count.
This is what I think of when I hear index, key, and value
local Table = {
[3] = 3, -- index = 1, key = 3, value = 3
[2] = 4, -- index = 2, key = 2, value = 4
[1] = true -- index = 3, key = 1, value = true
}
99% sure this is completely right
Not really, it’s like this:
local Table = {
[3] = 3, -- index = 3, key = 3, value = 3
[2] = 4, -- index = 2, key = 2, value = 4
[1] = true -- index = 1, key = 1, value = true
}
since Studio will always order it.
If there is Index that is not a number, the table will be called Dictionary and index will be called key, although there are many (including myself) that use key for both.
no this is completely false
the key is the name for the value and the index is simply the order
the index is always a number
Nope, I don’t say it, the output says it
no the 3 key value has an index of 1
roblox will auto order the table to make the index into 3 due to the key being a number
so simply the indexes switched and it was initially the index I said and then turned into the index you said
Technically key and index are the same but roblox says key for dictionaries and index for tables.
anyway, if you assign a key or an index to the object in a table, roblox will sort it out when it should return it.
first things first, key and index are not “technically” the same
second, dictionaries are tables
trust me ik what I’m talking about here
