Combine framework has several advanced combining operators that allow us to manipulate and combine streams of events. Let’s explore them with example. CombineLatest The combineLatest operator takes two or more input streams and combines the latest value from each stream into a single stream. This operator is particularly useful when we…

This article, the second ‌in the series “Flutter Navigation System”; introduces the usage of Anonymous Routes. Anonymous Routes and Named Routes are used in Imperative Navigation. Background As explained in ‌the previous article (Part 1 of this series), the following widgets and classes are used in imperative navigation. 1 — Route…

So far we have been working with individual publishers but the next set of publishers allow us to combine multiple streams, outputs as well as other publishers. Prepend Prepend operator allows us to prepend values at the beginning of publisher pipeline. We use this operator to prepend values to the publishers’…

Text views in SwiftUI are used to show static text on the screen. Text view is SwiftUI version of UILabel. Text views take a string as a parameter and they return a view to display static text on to the screen. Just like any other view in SwiftUI, Text view…

This article, the eleventh in “Provider” series is about StreamProvider which is used to handle multiple future values. Background StreamProvider works like the FutureProvider. However, StreamProvider will provide a stream and listens to events (values) in that stream. Whenever there is a new event in the stream, it rebuilds the widgets…

In Combine framework, filtering operators are used to selectively process or ignore specific values emitted by publishers. These operators allow us to filter out unwanted events and work with only those events that meet the certain criteria. In other words, these operators filter the data emitted by publishers based on…

The Introduction FutureProvider is used to provide a value that may not be available when the widget tree is ready to use that value i.e., when widgets in the widget-tree are built. Alternatively, we can say, when widgets in the UI are rendered for the first time. Hence, the primary application of…

Let’s look at transforming operators with example for each. Collect The collect operator is used to collect a specific number of values emitted by a publisher and emit them as an array. The collected values are emitted only when the array has reached the specified size. import Combine let numbers = (1...10).publisher let…

This article is the first in the series “Flutter Navigation System”, hence introduces Flutter navigation and routing system. Introduction Building cross-platform applications has become easier now. Thanks to Flutter. It works with all popular platforms, including the web, iOS, and Android and that is why its popularity rate is very fast, …