Question 1

How do I handle UI button events with Signals in iOS?

Accepted Answer

Signals extends UIControl, so you can subscribe directly to events like onTouchUpInside. For example, use `button.onTouchUpInside.observe(with: self) { // handle tap }`, as shown in the 'Replacing actions' section of the README.

Question 2

Signals vs Combine for Swift event handling: which should I choose?

Accepted Answer

Signals is lighter and simpler, ideal for basic event handling without Combine's learning curve. However, Combine is Apple's native framework with more features and better integration for iOS 13+ projects, so for modern apps, Combine might be the better long-term choice.

Question 3

Can Signals replace NotificationCenter completely in my app?

Accepted Answer

Yes, Signals provides type-safe alternatives to global notifications, reducing runtime errors. But it requires defining explicit signals per event, whereas NotificationCenter is more ad-hoc, so refactoring existing code may be necessary.

Question 4

How to install Signals using Swift Package Manager?

Accepted Answer

Add the dependency in your Package.swift file: `.package(url: "https://github.com/artman/Signals", from: "6.0.0")`. This method supports modern Swift toolchains and is straightforward for SPM-based projects.

Question 5

Is Signals thread-safe when firing events from multiple threads?

Accepted Answer

Signals allows dispatching callbacks on specific queues with `dispatchOnQueue`, but it doesn't enforce thread safety by default. You must manage concurrent access carefully to avoid race conditions when firing signals from different threads.

Question 6

How to filter events in Signals to only respond to specific values?

Accepted Answer

Use the `.filter` method on subscriptions. For instance, `.filter { $0 == 1.0 }` will execute the callback only when the progress is 100%, as demonstrated in the 'Advanced topics' section with the network loader example.

Signals

What is Signals?

Overview

Use Cases

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Related Projects

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Pros & Cons

Pros

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Frequently Asked Questions