Flow Processing

Explore how to manipulate and transform flows using Kotlin coroutine functions such as map, filter, take, and drop. Understand the relationship between flow processing and collection operations while gaining practical knowledge to handle data emitted over time efficiently.

We'll cover the following...

The map function
The filter function
The take function
The drop function

We’ve presented Flow as a pipe through which values flow. As they do so, we can change them in different ways: drop, multiply, transform, or combine. These operations between flow creation and the terminal operation are called flow processing. In this chapter, we’ll learn about functions used for this.

Note: The functions presented here might remind us of the functions we use for Collection processing. This is no coincidence as they represent the same concepts, with the difference being that flow elements can be spread in time. ...

1.Getting Started

2.Understanding Kotlin Coroutines

3.Coroutines Under the Hood

4.Kotlin Coroutine Library

5.Coroutine Context

6.Job and Awaiting Children

7.Cancellation and Exception Handling

8.Coroutine Scope Functions

9.Dispatchers and Constructing a Coroutine Scope

10.Shared State

11.Testing Kotlin Coroutines

12.Channel and Actors

13.Hot and Cold Data Sources

14.Flow

15.Flow Building

16.Flow Lifecycle Functions

17.Flow Processing, SharedFlow, and StateFlow

18.Wrap Up!

Flow Processing