KEVEKEV77
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| Joined: 12 Mar 2009 |
| Total Posts: 6961 |
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| 21 Nov 2013 08:09 PM |
So... I see some people do this
for i,v in pairs...
What type of loop is it? what does it do? If someone says "index" explain that as well. I mean.... is i,v a variable? Or is it required? |
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iLiminate
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| Joined: 26 Feb 2012 |
| Total Posts: 388 |
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| 21 Nov 2013 08:12 PM |
Say you have a list: blah = {"a","b","c"} doing for i,v in pairs(blah) print("Index:"..i,"Word:"..v) end Index would be like. blah[1] = "a", because the first([1]) item in blah is "a". Hope this helped! |
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cntkillme
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| Joined: 07 Apr 2008 |
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| 21 Nov 2013 08:12 PM |
i, v are 2 variables
think about it like this
function x() return 123, 456 end
i, v = x() print(i, v) >123 456 |
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KEVEKEV77
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| Joined: 12 Mar 2009 |
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| 21 Nov 2013 08:13 PM |
| cool i didnt know return was blue word, what does it do? |
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| 21 Nov 2013 08:14 PM |
It is a for loop.
pairs is a iterator function.
i and v are variables and can be anything.
so the basic format is:
for Variables in Iterator do
end
--- Pairs returns two variables. The first one the index. The second one the value.
So: for Banana,Apple in pairs(TABLE) do
end
let's say TABLE = {"Pop","Bed","Cookie"} In this table Pop is the first element. Bed is the second and Cookie is the third.
Using pairs the first variable refers to the location/index of the item in the loop.
The second variable is the current value in the table being looped through. |
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cntkillme
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| Joined: 07 Apr 2008 |
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| 21 Nov 2013 08:16 PM |
it returns a value or multiple values or tables or anything really
function lol() return "CNT" end
print(lol()) >>CNT |
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iLiminate
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| Joined: 26 Feb 2012 |
| Total Posts: 388 |
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| 21 Nov 2013 08:17 PM |
EDIT: Completely botch this up. =P Fix: Say you have a list: blah = {"a","b","c"} doing for i,v in pairs(blah) print("Index:"..i,"Word:"..v) end This would print out:
Index:1,Word:a Index:2,Word:b Index:3,Word:c
Index would be like. blah[1] = "a", because the first([1]) item in blah is "a". Hope this helped! |
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| 21 Nov 2013 08:17 PM |
Return could return uhh...Pretty much any variable for value.
Tuple,Table,nil,Int,Float,Instance,Any other Roblox object.
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KEVEKEV77
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| Joined: 12 Mar 2009 |
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| 21 Nov 2013 08:20 PM |
hmm In what case would I use it in? Can u give me an example telling me EXACTLY what it does, above was quite thorough, but did not explain what the script did. Lemme try:
local Chips = { "Spicy", "Mild", "Nacho" }
For lol,LOL in pairs (Chips) do
now what |
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cntkillme
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KEVEKEV77
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| Joined: 12 Mar 2009 |
| Total Posts: 6961 |
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| 21 Nov 2013 08:21 PM |
what would
print (lol) do? the same? |
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iLiminate
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| Joined: 26 Feb 2012 |
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| 21 Nov 2013 08:22 PM |
print(lol) would print >1 >2 >3 |
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cntkillme
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| 21 Nov 2013 08:22 PM |
No, it would print the index Like >1 >2 >3 |
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| 21 Nov 2013 08:23 PM |
It loops through every item in the table.
So
for Octo,Item in pairs({"Bob","Joe"}) do print(Item,"Is at the "..Octo.." Index") end
Or you could loop through all the players.
This would kick ALL players.
And btw GetPlayers() return a table with all the players.
for _,Player in pairs(Game.Players:GetPlayers()) do Player:Kick() end |
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KEVEKEV77
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| Joined: 12 Mar 2009 |
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| 21 Nov 2013 08:27 PM |
?!?!?!?!? Do both of them mean the same thing?
would
_:Kick() Work?
anyways, I found this
while wait() do for k,v in pairs(game.Players:GetChildren()) do if v.Character then Char = v.Character:GetChildren() -- ITS V! WAHT DOES IT DO?! would k work? for i = 1,#Char do if Char[i].ClassName == "Hat" then Char[i]:destroy() end end end end end
It seems to remove hats, |
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KEVEKEV77
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| Joined: 12 Mar 2009 |
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| 21 Nov 2013 08:28 PM |
No, it would print the index Like >1 >2 >3
didnt see that, lol |
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cntkillme
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| 21 Nov 2013 08:28 PM |
in that script, k would return the position of the player in the table so print(k) >1 >2 and till the amount of players |
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iLiminate
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| Joined: 26 Feb 2012 |
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| 21 Nov 2013 08:28 PM |
| v represents the player name. |
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cntkillme
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| 21 Nov 2013 08:29 PM |
Lim Tt represents that actual player, not the name |
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KEVEKEV77
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| Joined: 12 Mar 2009 |
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| 21 Nov 2013 08:30 PM |
| what could I use index for? |
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cntkillme
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| Joined: 07 Apr 2008 |
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| 21 Nov 2013 08:30 PM |
It depends, not much really, unless you have an associative table
local foods = { banana = 5, orange = 10 }
for food, price in pairs(foods) do print(food, "costs: $", price) end |
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| 21 Nov 2013 08:31 PM |
I rarely use it...Hard to think of an example. It is usually just there and ignored.
But it is useful sometimes. |
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| 21 Nov 2013 08:32 PM |
| And no _:Kick would error. _ is a number variable. |
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cntkillme
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| Joined: 07 Apr 2008 |
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| 21 Nov 2013 08:32 PM |
It's actually used more than people think When peope do
local players = game.Players:GetPlayers() local randomPlayer = players[math.random(#players)] Then they are using the index to get a player.
Let's say I joined first, then you did: 1 - cntkillme: game.Players.cntkillme OR game.Players:GetChildren()[1] 2 - you: game.Players.you OR game.Players:GetChildren()[2] |
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KEVEKEV77
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| Joined: 12 Mar 2009 |
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| 21 Nov 2013 09:02 PM |
but you didnt use in pairs.... D:
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