Hey Angular enthusiasts! 🌟 Are you ready to dive into the exciting world of Angular Signals? 🧐 Get ready to level up your app's performance with this new developer preview feature that's here to revolutionize rendering updates! Let's unwrap the magic of signals in this thread.

What exactly are Angular Signals, you ask? 🤔 In a nutshell, they're like your app's secret communicators! 🕵️‍♂️ They granularly track where and how your state is used in your app, making way for some serious rendering optimization. 💥

Signals, simply put, are wrappers around values. These values can range from simple numbers to complex data structures. 📦🔢 They're special because they can send signals to interested parties when their value changes. Imagine getting notified when something you care about gets updated! 📢

Want a signal? 🚦 You got it! You can create a writable signal using the signal function. Let's say we're counting stuff:

const count = signal(0);

console.log('The count is: ' + count());

Now, here comes the fun part! Changing the value of a writable signal is a breeze. Use .set() to directly set the value or .update() to compute a new one based on the previous value. Let's increase the count:

count.set(3);
count.update(value => value + 1);

But what if you're dealing with more intricate objects, like a list of todos? 📝 Angular Signals has got your back! Use .mutate() to internally modify objects without replacing them entirely. Check this out:

const todos = signal([{ title: 'Learn signals', done: false }]);

todos.mutate(value => {
  value[0].done = true; 
});

Just to be clear, writable signals can be updated directly and are type "WritableSignal." 💡

So there you have it, folks! Angular Signals are like little messengers that enhance your app's performance, making it smarter about when and how to update. Remember, these are still in developer preview, so stay tuned for more updates and improvements! 🚀🔧

Have a blast experimenting with Angular Signals! 🎉 If you've got questions or thoughts, drop them below. Let's keep the conversation going! 👇😄

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