danielpi/SwiftTimer

A basic timer implementation in Swift

Swift Timer

A basic Timer for Swift

Inspiration

I use NSTimer quite a bit in Objective C. Its interface doesn't fit in with Swift code though. So I've built my own.

What do I use a timer for?

• To execute some code at a later time
• To repeatedly execute code at regular intervals
• As a timeout event trigger for asynchronous comms code/state machine

Ideal Interface

This is what I would like the code to look like (It doesn't yet)

First up a timeout example

let timeout = Timer(seconds: 5.0) { println("Time's Up!") }

// If we wanted to stop the timeout timer from executing
timeout.invalidate()

// If we wanted timeout to execute now
timeout.execute()

// If we want to reset the timer to a new time
timeout.reset(seconds: 2.0)

Next as a polling object

let poller = Timer(seconds: 0.2, repeats: true) {
	let data = self.serialPort.read()
	self.databuffer.append(data)
	self.processDataBuffer()
}

// If we wanted to stop the timeout timer from executing
poller.invalidate()

// If we want to change the polling frequency
poller.reset(seconds: 0.5)