ClojureScript · Up and Running by Sierra, Stuart -- Read -- Imperial Library of Trantor

Index

ClojureScript: Up and Running Preface

Who Should Read This Book How to Use This Book Conventions Used in This Book Using Code Examples Safari® Books Online How to Contact Us Acknowledgments

1. Introduction: Why ClojureScript?

The Rise of Browser Applications The Rise of JavaScript The Need for a Better Language Introducing ClojureScript

2. Hello World

Leiningen

Installing Leiningen on OS X and Linux Installing Leiningen on Windows

Using lein-cljsbuild

Getting Started with the REPL Compiling a ClojureScript File to JavaScript

Structuring the Leiningen project Updating the project configuration Writing a ClojureScript file Compiling

Running ClojureScript in the Browser Other Capabilities of lein-cljsbuild

3. The Compilation Process

Architecture

Google Closure Compiler The Google Closure Library ClojureScript and Google Closure The Compilation Pipeline

How to Compile

Compiling ClojureScript

Hello, Compiler The Clojure REPL

Compilation in Depth

Compilation Sources Compilation and Optimization Options

:optimizations Where do the files go? Compiling with optimizations Loading optimized code in a browser Compiling without optimizations Loading unoptimized code in a browser An alternative: pretty-printing

Other Compilation Options

Summary

4. ClojureScript Basics

ClojureScript versus Clojure Expressions and Side Effects Syntax and Data Structures

Symbols and Keywords Data Structures

Special Forms and Definitions Functions

Multi-Arity Functions Variadic Functions

Local Bindings

Destructuring

Closures Flow Control

Conditional Branching

cond do when

JavaScript Interop

The js Namespace Methods and Fields Constructor Functions Scope of this Exceptions

Summary

5. Data and State

Primitives

Strings Keywords Symbols Characters Numbers Booleans Functions nil

Data Structures

Collection Types

Lists Vectors Maps Sets

Immutability

Why immutability?

Persistence

Identity and State

Atoms

6. Sequences

The Sequence Abstraction Lazy Sequences

Letting Go of the Head

The Sequence API

map reduce filter Other Useful Sequence Functions

7. Namespaces, Libraries, and Google Closure

Namespaces

Using Namespaces

Using namespaces at the REPL

Using Namespaces Effectively The Implementation of Namespaces

Namespaces and *.js files Namespaces and variable names

Advanced Compilation Mode Consuming Libraries

ClojureScript Libraries JavaScript Libraries

Google Closure libraries Plain old JavaScript libraries

With Advanced mode Without Advanced mode

Creating Libraries

For Consumption by ClojureScript For Consumption by JavaScript

^:export metadata

8. Macros

Code as Data Writing Macros

Syntax-Quote Auto-Gensyms

Using Macros When to Write Macros Summary

9. Development Process and Workflow

Installing ClojureScript

Checking Out from Source Control Downloading a Compressed Archive Installing Dependencies

The Built-In Tools

Command-Line Compilation Clojure REPL ClojureScript REPL

The Browser REPL

Setting Up the Browser REPL

Serving your HTML via Ring and Compojure Starting the bREPL server Configuring the bREPL client

Additional lein-cljsbuild Features

Launching a Browser REPL Custom bREPL Launch Commands Hooking Into Default Leiningen Tasks Testing ClojureScript Code Including ClojureScript in JAR Files Compiling the Same Code as Clojure and ClojureScript

10. Integration with Clojure

AJAX The Reader and Printer Example Client-Server Application Extending the Reader

User-Defined Tagged Literals

Sharing Code Summary

A. Libraries

ClojureScript’s Standard Library Google Closure Library Domina Enfocus Jayq C2 core.logic

About the Authors Copyright

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