I tried to link with connection for my custom event but it got error saying “Expected type table, got {…} instead.” I tried different methods but it didn’t worked.
For context: Using “LinkedList” for a purpose to call :Disconnect() to remove without loops(Improving performance).
--!strict
-- This is unfinished btw.
local module = {}
local Signal = {} :: SignImpl
Signal.__index = Signal
local Connection = {} :: ConnImpl
Connection.__index = Connection
type SignImpl = {
__index : SignImpl,
new: () -> Signal,
Previous : Signal | Connection,
Next : Signal | Connection,
Connect : (self:Signal, Func:(...any) -> ...any, ...any) -> ...any
}
type ConnImpl = {
__index : ConnImpl,
new: () -> Connection,
Previous : Connection | Signal,
Next : Connection | Signal,
Disconnect : (self:Connection) -> ()
}
export type Signal = typeof(setmetatable({} :: {
Previous : Signal? | Connection?,
Next : Signal? | Connection?
}, {} :: SignImpl))
export type Connection = typeof(setmetatable({} :: {
Previous : Signal? | Connection?,
Next : Signal? | Connection?
}, {} :: ConnImpl))
function module.new()
local s = Signal.new()
s.Previous = s
s.Next = s
return s
end
function Signal.new()
return setmetatable({}, Signal)
end
function Connection.new()
return setmetatable({}, Connection)
end
function Signal:Connect()
local c = Connection.new()
c.Previous = self.Previous
c.Next = self
self.Previous.Next = c
self.Previous = c
return c
end
Dunno, looks a little messy as for me.
I’ve got too many "why?"s here, so I did some cleanup, please check this out:
--!strict
local module = {}
type link = {
next : link?;
previous : link?;
}
type connection = link & {
disconnect : (self : connection) -> ();
}
type signal = link & {
connect : (self : signal) -> connection;
}
local function disconnect(self : connection)
-- TODO
end
local function new_connection() : connection
local connection : connection = {
disconnect = disconnect;
}
return connection
end
local function connect(self : signal) : connection
local connection = new_connection()
connection.previous = self.previous
connection.next = self
if self.previous then
self.previous.next = connection
end
self.previous = connection
return connection
end
local function new_signal() : signal
local signal : signal = {
connect = connect;
}
return signal
end
function module.new() : signal
local signal = new_signal()
signal.next = signal
signal.previous = signal
return signal
end
return module
I advise you against having or using any kind of “signal” implementation in a static game that does not support modding/loadable content.
Also avoid prototype OOP and use ECS instead.
You need to seriously consider debloating the code fast, or else it will be a nightmare for performance.
--!strict
-- This is unfinished btw.
local module = {}
local Signal = {} :: SignImpl
Signal.__index = Signal
local Connection = {} :: ConnImpl
Connection.__index = Connection
type SignImpl = {
__index : SignImpl,
new: () -> Signal,
Previous : Signal | Connection,
Next : Signal | Connection,
Connect : (self:Signal, Func:(...any) -> ...any, ...any) -> ...any
}
type ConnImpl = {
__index : ConnImpl,
new: () -> Connection,
Previous : Connection | Signal,
Next : Connection | Signal,
Disconnect : (self:Connection) -> ()
}
export type base = {
Previous : Signal? | Connection?,
Next : Signal? | Connection?
}
export type Signal = typeof(setmetatable({} :: base, {} :: SignImpl))
export type Connection = typeof(setmetatable({} :: base, {} :: ConnImpl))
local function module_new()
local s = Signal.new()
s.Previous = s
s.Next = s
return s
end
local function Signal_new()
return setmetatable({}, Signal)
end
local function Connection_new():Connection
return setmetatable({}, Connection)::Connection
end
function Signal:Connect()
local c = Connection_new()
c.Previous = self.Previous
c.Next = self
;(self.Previous::base).Next = c::Connection
self.Previous = c
return c
end
Oh wow, you didn’t put metatable on it? I mean its ok. But it works.
local function disconnect(self : connection)
-- self.Previous.Next = self.next (Type Error: It could be a nil.)
-- self.Next.Previous = self.Previous (Type Error: It could be a nil.)
if self.previous then
self.previous.next = self.next
end
if self.next then
self.next.previous = self.previous
end
end
Yea, you ask me why. Its kinda my style or method of coding or something because I tried making a new game but idk what my style/method of the coding. You may judge me on it if Im wrong because Im struggling on type annotations.
