@selector() in Swift?

Cover Image for @selector() in Swift?
Matheus Mello
Matheus Mello
published a few days ago. updated a few hours ago

The Mystery of @selector() in Swift: Solving the NSTimer Problem

šŸ‘‹ Hey there, fellow Swifter! šŸ˜Ž Are you trying to create an NSTimer in Swift but finding yourself stuck? You're not alone! šŸ¤” Let's dive into the magical world of @selector() and find the perfect solution to your problem. šŸ’”šŸ”

The Problem

So, you're trying to create an NSTimer in Swift, and you encounter an error message while using the @selector() syntax:

NSTimer(timeInterval: 1, target: self, selector: test(), userInfo: nil, repeats: true)

The error message you see is:

Could not find an overload for 'init' that accepts the supplied arguments

Nerve-wracking, isn't it? šŸ˜°

The Investigation

You've tried a few things to tackle this issue. Let's analyze them one by one:

  1. selector: test()
  2. selector: test
  3. selector: Selector(test())

Unfortunately, none of these approaches seem to work, and you're not finding any helpful solutions in the references either. šŸ˜”

The Solution šŸ’”

Here's the secret sauce to solving this @selector() conundrum in Swift:

#selector(test)

Yes, you read that correctly. The correct syntax simply involves replacing @ with # and ditching the parentheses. šŸŽ‰šŸ„³

So, your modified code will look like this:

NSTimer(timeInterval: 1, target: self, selector: #selector(test), userInfo: nil, repeats: true)

By making this small tweak, you'll be able to create your NSTimer without any hiccups or error messages. šŸš€

One More Thing šŸŒŸ

Now that we've successfully decoded the mystery of @selector() in Swift, it's time to level up your Swift skills! šŸ˜Ž But wait, before you go, we'd love to hear from you. šŸ“£

Have you encountered any other Swift programming problems? Is there a particular concept you'd like us to cover in our next blog post? Drop a comment below and let's dive into it together! šŸ’¬šŸ‘‡

Happy coding! šŸ’»šŸš€


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