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What does "do" do?
from following (copied) example:
do
local PlayerColours = { -- Edit the colors you want to add or replace below. Must be brick colors.
BrickColor.new("Alder"),
BrickColor.new("Light blue"),
BrickColor.new("Pastel green"),
BrickColor.new("Sand green"),
BrickColor.new("Medium red"),
BrickColor.new("Dusty rose"),
BrickColor.new("Pastel orange"),
BrickColor.new("Pastel yellow"),
}
local GetNameValue
function GetChatColour(Name)
return PlayerColours[GetNameValue(Name) + 1]
end
function GetNameValue(Name)
local Length = #Name
local Value = 0
for Index = 1, Length do
local CharacterValue = string.byte(string.sub(Name, Index, Index))
if (Length - Index + 1) % 4 < 2 then
Value = Value + CharacterValue
else
Value = Value - CharacterValue
end
end
return Value % 8
end
end
return GetChatColour
What is the purpose of the "do" at the start of the code?
0
Creates a new scope. bosswalrus 84 — 9y
0
See one of the earliest questions: https://scriptinghelpers.org/questions/7/doend-statement BlueTaslem 18071 — 9y
2 answers
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3
do is used to create a new scope. A scope is used mainly for manipulating and declaring variables without effecting other variables further down the script. Anything involving functions, loops, if statements, etc. creates a new scope.
a = 1
do
local a = 2
print(a) --prints 2
end
print(a) --prints 1
Here is the output of the same thing without using scopes:
a = 1 local a = 2 print(a) --prints 2 print(a) --prints 2
variables declared locally in scopes do not effect variables of unrelated scopes. They do, however, effect variables of scopes nested within them.
a = 1
do
local a = 2
do
print(a) --prints 2
end
end
print(a) --prints 1
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0
The do creates a new scope e.g
do
print("abcd")
end
do
print("efgh")
end
It's usually used to section of pieces of your code I guess.