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Can anyone explain to me what :sub() and :len() does ?
so like here just a script can anyone explain to me what the :sub() part does. This is just a map changing script. I just don't understand what it does. same with :len()
-- Store all your maps in Lighting.
current_map = nil
names = {}
game.Players.PlayerAdded:connect(function(player)
for i, v in pairs(names) do
if v == player.Name then
player.Chatted:connect(function(chatmsg)
if chatmsg:sub(1,4) == "map/" then
local map = chatmsg:sub(5, chatmsg:len())
if game.Lighting:FindFirstChild(map) then
if current_map ~= nil then
current_map.Parent = game.Lighting
end
game.Lighting[map].Parent = game.Workspace
current_map = game.Workspace[map]
end
end
end)
end
end
end)
1
len is how long it is and sub is the character in binary between two points kingleonlion 2 — 6y
0
instead of len you can also use #StringVariable or #("String") RubenKan 3615 — 6y
1 answer
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3
sub() parses a subsection of the provided string.
local foo = "Abcdef" print(foo:sub(1,4)) --> Abcd
len() returns the length of the provided string.
local foo = "Abcdef" print(foo:len()) --> 6
What it seems to do in the instance you have provided above is parse the string from the fifth character to the last character (the message's length). len() actually doesn't need to be used here at all because the second parameter of sub() is optional, and when not provided will automatically parse from the first argument to the end of the string.
0
ty WillBe_Stoped 71 — 6y