Book Image

Democratizing Application Development with AppSheet

By : Koichi Tsuji, Suvrutt Gurjar, Takuya Miyai
Book Image

Democratizing Application Development with AppSheet

By: Koichi Tsuji, Suvrutt Gurjar, Takuya Miyai

Overview of this book

Many citizen developers regularly use spreadsheets in their business and day-to-day jobs. With AppSheet, you can take your spreadsheets to the next level by enhancing their ease of use. The platform allows you to run your business efficiently and manage it in the field outside of an office or indoor environment. This book enables you to create your own simple or medium to complex hybrid apps for business or personal use. As a beginner to AppSheet, this book will show you how the AppSheet Editor works and how it is used to configure, test, and deploy an app and share it with others as users or co-authors. You’ll learn about widely used features such as how to use data sources, create app views and actions, construct expressions with AppSheet functions, and make your app secure through security and UX options. Next, you’ll create email/attachment templates and develop reports/documents based on templates, store in the cloud, and send files through emails. You’ll also understand how to integrate third-party services and monitor various usage statistics of your app. As you progress, you’ll explore various features with the help of sample apps that you create using the book. By the end of this book, you’ll have learned how to make the most of AppSheet to build powerful and efficient applications.
Table of Contents (20 chapters)
Part 1 – Introduction and Getting Started
Part 2 – App Editor and Main Features
Part 3 – Advanced Features and External Services
Part 4 – App Templates and Tricks for App Building

Performing date, time, and duration calculations with date and time expressions

Almost every app needs the date and time functions in some form or the other. Scheduling apps, project management apps, time-keeping apps, and attendance apps need date and time functions. In this section, you will learn how you can use date and time functions in AppSheet to compute dates, times, and durations in your apps.

Date and time math is more complex than metric or decimal system math because the relationship between various date and time parameters is very uneven. On the other hand, as we are aware, a metric system is even – that is, the units of measurement are always in multiples of 10. The following table shows how each date and time unit of measurement has a different multiplier to calculate the next unit of measurement:

Table 4.28 – Date and time parameters

As a result of this uneven relationship between various time and date units of measurement,...