Structure your app: introduction to Shiny modules

Описание: Jonas Hagenberg presents on Structuring apps and gives an introduction to Shiny modules.

In this tutorial, Jonas gives an introduction to modules, their advantages over simple R functions, and how existing functionality can be transferred to modules.

For an easy start, Jonas covers common pitfalls needed to overcome for productive use of modules:
Passing reactive objects to modules
Returning reactive values from the module to the calling environment
Nesting modules
Dynamically generating modules (including UI)

The contents of the tutorial are delivered by short lectures followed by hands-on coding sessions in break-out rooms. For this, you need a basic knowledge of reactive programming/Shiny.

Main Sections

0:00 Introduction
3:43 Recap: reactive programming
7:12 Ways to reduce code complexity
9:53 What are shiny modules
11:40 General structure
13:29 Module structure
17:38 Namespacing - 1
19:59 Namespacing - 2
21:04 Demo
29:34 Namespacing -2
31:26 Input values 1 and 2
32:28 When to use modules?
33:09 Exercise 1: write your first module
39:34 Module communication
39:48 Reactive inputs - 1-6
50:00 Reactive Inputs
53:19 Output values from modules 1 and 2
56:03 Exercise 3a/b/c reactive outputs
57:39 Nesting
59:11 Where does a module live?
1:00:01 API change 1 and 2
1:01:14 What should be a module?
1:01:52 Summary and questions

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