What is the difference between pure and impure pipes?

Can you explain the difference between pure and impure pipes in Angular?

Sure! In Angular, pure pipes only re-evaluate when their input reference changes, while impure pipes re-evaluate on every change detection cycle.

Why would I use a pure pipe instead of an impure pipe?

Using a pure pipe can improve performance since it avoids unnecessary calculations when the input hasn't changed.

Can you give me an example of when to use an impure pipe?

An impure pipe is useful when you need to display data that changes frequently, like a timestamp or a random number.

Are there any downsides to using impure pipes?

Yes, impure pipes can lead to performance issues because they run on every change detection cycle, which can be costly.