OrchardNest

In the [previous episode](https://cocoacasts.com/initializer-injection-with-view-controllers-and-storyboards), you learned that it is possible to use initializer injection in combination with storyboards as of iOS 13 and tvOS 13. We didn't...

Storyboards have many benefits, but they also have a number of significant downsides. Not being able to control the initialization of a view controller is one of them, especially if you want to use initializer injection. As of iOS 13 and...

The title of this episode is a bit misleading because the Swift programming language has no support for abstract classes. There are a few workarounds, though. In this episode, we take a look at two alternatives to the abstract class...

Types need to have a unique name. In Objective-C, naming collisions with other libraries and frameworks are avoided by adding a prefix to a type. That is why we use `UIView` instead of `View` and `CGRect` instead of `Rect`.

In 2019, Apple introduced another powerful API alongside the Combine framework, diffable data sources. Diffable data sources make it almost trivial to build performant table and collection views. In this episode, I show you why diffable...

In this and the next episode, we shift focus to the week view controller. Populating the week view requires a different approach. It contains a table view and the week view model manages an array of `WeahterDayData` objects. Even though...

The Combine framework defines a range of operators to combine publishers. Combining publishers is a common pattern in reactive programming. In this episode, we improve the efficiency of the `RootViewModel` class by combining multiple...

We ran into several issues in the [previous episode](https://cocoacasts.com/building-reactive-applications-with-combine-reducing-complexity-and-code-duplication). The `assign(to:on)` and `sink(receiveValue:)` methods are convenient, but...

In this episode, we optimize the implementation of the day view controller and the day view model. There are a few details we need to take care of. First, the day view controller should display an error message when its view model emits an...

There are a few user interface issues we need to address in this episode. The day view controller no longer shows its activity indicator view while it is waiting for weather data and the user interface elements that show the weather data...

There are a few user interface issues we need to address in this episode. The day view controller no longer shows its activity indicator view while it is waiting for weather data and the user interface elements that show the weather data...

In the [previous episode](https://cocoacasts.com/building-reactive-applications-with-combine-hiding-implementation-details-with-type-erasure), we put the foundation in place to reactify the `DayViewController` class. In this episode, you...

In the [previous episode](https://cocoacasts.com/building-reacting-applications-with-combine-hiding-implementation-details-with-type-erasure), we put the foundation in place to reactify the `DayViewController` class. In this episode, you...

The root view controller displays the weather data the publisher emits. Every time the publisher emits weather data, the child view controllers of the root view controller receive the weather data and display it to the user. This works...

The root view controller displays the weather data the publisher emits. Every time the publisher emits weather data, the child view controllers of the root view controller receive the weather data and display it to the user. This works...

We made good progress in the previous episodes, but we need to make some changes to the `RootViewController` and `RootViewModel` classes. We address three issues in this episode. First, the `RootViewController` class shouldn't be aware of...

We made good progress in the previous episodes, but we need to make some changes to the `RootViewController` and `RootViewModel` classes. We address three issues in this episode. First, the `RootViewController` class shouldn't be aware of...

The `Published` property wrapper lowers the barrier to start integrating the Combine framework into a project. There are a few details you need to take into account, though. Remember from the [previous...

The `Published` property wrapper lowers the barrier to start integrating the Combine framework into a project. There are a few details you need to take into account, though. Remember from the [previous...

The Cocoa frameworks use a range of asynchronous interfaces, including the target-action pattern, key-value observing, notifications, and callbacks. We can leverage the Combine framework to create a single, unified interface for...

The Cocoa frameworks use a range of asynchronous interfaces, including the target-action pattern, key-value observing, notifications, and callbacks. We can leverage the Combine framework to create a single, unified interface for...

You learned in the previous episode that a publisher sends zero or more values. A publisher emits an error if something goes wrong and, if the publisher is finite, it can send a completion event. In this episode, we continue exploring the...

You learned in the previous episode that a publisher sends zero or more values. A publisher emits an error if something goes wrong and, if the publisher is finite, it can send a completion event. In this episode, we continue exploring the...

Streams of values are at the heart of reactive programming. These values are delivered by publishers. In this episode, we zoom in on the relationship between publishers and subscribers.

Streams of values are at the heart of reactive programming. These values are delivered by publishers. In this episode, we zoom in on the relationship between publishers and subscribers.

We haven't simplified or improved the implementation of the `setupNotificationHandling()` method of the `RootViewModel` class by adding Combine to the mix. In fact, Combine introduced additional complexity and we now need to manage the...

We haven't simplified or improved the implementation of the `setupNotificationHandling()` method of the `RootViewModel` class by adding Combine to the mix. In fact, Combine introduced additional complexity and we now need to manage the...

In the [previous episode](https://cocoacasts.com/building-reacting-applications-with-combine-getting-your-feet-wet-with-combine), you learned about publishers and subscribers. Combine creates a subscription when a subscriber is attached to...

In the [previous episode](https://cocoacasts.com/building-reactive-applications-with-combine-getting-your-feet-wet-with-combine), you learned about publishers and subscribers. Combine creates a subscription when a subscriber is attached to...

It is time to show you what Combine feels like and what it can do for you. What do you gain by using the Combine framework in your projects? Let's start with some good news. The Combine framework has a relatively small vocabulary. You...

It is time to show you what Combine feels like and what it can do for you. What do you gain by using the Combine framework in your projects? Let's start with some good news. The Combine framework has a relatively small vocabulary. You...

Earlier in this series, we defined reactive programming as **working with asynchronous streams of data**. Now that you know what asynchronous streams of data are, it is clear why asynchronous programming is such a powerful concept.