Opa · Up and Running by Henri Binsztok, Adam Koprowski -- Read -- Imperial Library of Trantor

Index

Opa: Up and Running Preface

What Is Opa? How Do I Work with Opa? Conventions Used in This Book Using Code Examples Safari® Books Online How to Contact Us Acknowledgments

I. Coding a Mini Wikipedia

1. First Steps: Getting to Know Opa

Installing Opa

Installing Node.js Auto-Installing MongoDB

Our First Program

Writing and Running the Code What localhost:8080 Means What the Code Means What Happens When We Run Your Application Details About the Opa Runtime

Toward Real Programs Battle Plan Summary

2. Opa Fundamentals

Primitive Values Dynamic Content Records Introduction to Types, and More About Records A Brief Introduction to Variants Functions: Building Blocks Functional Programming Functional + Typed Summary

3. Servers, Resources, and URLs

Web Resources Embedding (Static) Resources Serving Resources Constructing (Dynamic) Resources URL Dispatching Summary

4. Data Storage

CRUD (Create, Read, Update, and Delete) Maps (Dictionaries) Summary

5. Building the UI in HTML and CSS

HTML Markup

Tags and Attributes Inserts Event Handlers DOM Manipulation Example: A Guessing Game

The Wiki Interface (HTML)

HTML Plumbing Markdown Dynamically Updating the Page

Adding Style (CSS)

Explicit Style Attributes Opa-Powered Style External CSS Wiki with Style

Bootstrap: Nice, Out-of-the-Box Styling Working with Designers

How Should I Use the DOM Structure? Can You Describe Your Development Environment? How Should I Write CSS with Opa? Which Tools Should I Use to Write CSS? How Do I Improve the CSS Workflow in Opa? How Often Should Developers and Designers Interact? What Should Developers Know About CSS? What Should Designers Know About Opa? Can You Provide Some Tips for Quickly Customizing Your App’s Bootstrap-Based UI?

Summary

II. Coding a Mini-Twitter

6. The Web Chat App

Starting a New Project View: Building User Interface Model: Application Logic Connecting the Model and the View

Showing New Messages Broadcasting the Current User’s Messages Connecting Everything

Understanding Networks Exercises

Customizing the Display Saying “Hello” Distinguishing Messages Between Users User Customization And Beyond

7. More Advanced Features of Opa

Learning More About Types

Variant Types Pattern Matching Polymorphic Types Recursive Types

Recursive Functions What About Loops? Bigger Projects Packages Summary

8. User Management

Setting Up the View Bootstrap Widgets: Modal Windows Form Handling in Opa: Registration Form

Alerts

Modeling and Adding Users Account Creation Notification: Sending Emails Activating a User Account Without an Activation Email Account Activation: URL Data Handling Keeping Track of Logged-In User: Handling User Associated Data The User’s Top-Bar Menu Exercise Summary

9. Building Reactive UIs: New Messages with a Real-Time Preview

Parsing

Parsing Expressions

Modeling Messages Rendering Messages Reactive UI: Live Preview Summary

10. Data Storage and Querying: Storing and Fetching Relevant Messages

Collections in Opa: Lists, Sets, and Maps Declaring Data Inserting/Updating Data Reading (and Querying) Data

Projections

Data Manipulations in Birdy

Database Declaration Storing New Messages Fetching Relevant Messages User and Topic Pages Following Users and Topics Following Users Following Topics Follow Button

Exercise Summary

About the Authors Colophon Copyright

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