RealSignal.Once - Real Function Reference

RealSignal.Once(signal: RealSignal, callback: (....any) -> ()): RealSignalConnection

参数

RealSignal

必填

Signal object returned by Signal.new.

(....any) -> ()

必填

Function called at most once for this connection.

RealSignalConnection

Connection object with Disconnect.

Signal object returned by Signal.new.

Name	Type	Required	说明
`Connect`	`(callback: (...any) -> ()) -> RealSignalConnection`	Yes	Adds a callback that runs when Fire is called.
`Once`	`(callback: (...any) -> ()) -> RealSignalConnection`	Yes	Adds a callback that is disconnected before its first callback invocation.
`Wait`	`() -> ...any`	Yes	Yields until Fire resumes the waiter with the fired values.
`Fire`	`(...values: any) -> ()`	Yes	Runs connected callbacks and resumes waiters with the provided values.

Connection object returned by RealSignal.Connect and RealSignal.Once.

Name	Type	Required	说明
`Disconnect`	`() -> ()`	Yes	Disconnects the connection.

Connect a callback that runs at most once.

local signal = Signal.new()

signal:Once(function(value)
    print(value)
end)

signal:Fire("first")
signal:Fire("second")