What are some examples of Redux selectors?

Can you give me some examples of Redux selectors?

Sure! Redux selectors are functions that extract specific pieces of data from the Redux store. For example, you might have a selector that retrieves all users from the state.

How would I write a selector to get a specific user by ID?

You can create a selector like this: const selectUserById = (state, userId) => state.users.find(user => user.id === userId); This will return the user object that matches the given ID.

What if I want to get a list of active users?

You can write a selector like this: const selectActiveUsers = state => state.users.filter(user => user.isActive); This will return an array of users who are active.

Are there any libraries that can help with creating selectors?

Yes! Libraries like Reselect can help you create memoized selectors, which can improve performance by avoiding unnecessary recalculations.