book

Learning ClojureScript

by W. David Jarvis, Rafik Naccache, Allen Rohner

June 2016

Intermediate to advanced

320 pages

6h 51m

English

Packt Publishing

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What this book covers

Downloading the example codeErrataPiracyQuestions
Getting familiar with the ClojureScript ecosystemInside the ClojureScript compilerWorking with the ClojureScript REPL
Working with PiggiebackSetting up Weasel with PiggieBack for browser live codingClojureScript REPLs on Node.js with Piggieback
Setting up Figwheel for browser live codingNode.js interactive development workflows with Figwheel
Working on Emacs with Piggieback and Weasel on CIDERInstalling CIDERWorking with Clojure and ClojureScript REPLs on CIDERWorking on Emacs with Figwheel and inf-clojureInstalling inf-clojureConfiguring inf-clojure to run Figwheel as a Clojure subprocess
Understanding ClojureScript functionsFunctionsMultiarity and variadic functionsAnonymous functionsSide effectsLocal variables
Scalar typesNumbersStrings and charactersNilBoolean values and truthinessKeywordsSymbolsClojureScript collectionsListsVectorsWhen should I use lists versus vectors?MapsDifferent types of mapsSetsSequencesLazinessCollection protocolsSequentialAssociativeSortedCountedReversibleObject-oriented programmingProtocolsTypesRecordsExtending types and protocolsReifyOther ClojureScript typesRegular expressionsAtoms
DestructuringNamespaces
JavaScript collectionsArraysJavaScript objectsJS interop syntaxThe Google Closure Compiler and using external JavaScript librariesReferencing external libraries with externsBundling external librariesGoogle Closure Compiler compatible codeForeign JavaScriptCLJSJS
Functional programming conceptsLoops and iterationLoop and recur functionsfordotimesdoseqdoallHigher-order functionsmapThe filter and remove functionsreduceTransducers
if and whenif-let and when-letcond and condpcaseException handling
read and evalYour first macroWriting more advanced macrosGensyms and local binding in macrosDon't repeat yourself!A personal favorite – Threading macrosA closing note on macros
JavaScript is event-driven by defaultEvent-driven programming in ClojureScriptThe Communicating Sequential Processes concurrency modelGetting started with core.asyncBackground listenersErrors and core.async
Raw DOM manipulation and events handlingInteracting with the browser using the Google Closure Library
Client-side templating in ClojureScriptCSS preprocessors in ClojureScript
Understanding Single Page AppliactionsThe tradeoffs of SPAsRicher UIEasier to deal with client-side dataEasier to deal with AJAXFaster client interactions once the page is loadedMore development workLegacy browser support is harder
The React terminologyThe components of an SPASetting upWhat just happened?Child componentsItems in the Om constructor signatureCursorsownerOptsInputRenderingThe React diffing algorithm
ComponentsState modelsCursors
ConstructingThe local stateLife cycle protocols
jQuery listeners
DependenciesThe serverTransitRingCORSData
pushStateNavigation
Real-time communication with websocketsUnderstanding the websocket protocolInitializationSending messagesUnderstanding Chord
Understanding the Datascript/Datomic data modelA basic queryQuery argumentsSchemaUnderstanding db.type/refCardinalityPullFinding resultsUnificationPredicate expressionsIndexesDifferences between Datomic and DatascriptWhy Datascript?
ClojureScript modulesPreparing for modulesGetting startedRoute definitionLoading modulesFixing development mode
.cljcSchema and input validationServer-side renderingSetting up the projectUnderstanding Foam
Pattern matching with core.matchConfiguring our projectGetting started with core.matchMatching collectionsGuards and function applicationsWrapping upExploring nested data structures with clojure.zipExample – Replacing values in a treeExample – Removing values from a treeFurther possibilitiesDeclaratively solving problems with core.logicConfiguring our projectGetting started with core.logicAdvanced core.logicGoing even further
Configuring our projectA quick introduction to schemaCollection schemasFunction schemasAdvanced schema validationSchema coercion
Testing your application with cljs.testUsing doo for easier testing configurationTesting fixturesAsynchronous testingAsynchronous fixtures
Compilation optimization levelsGenerating modulesTargeting a Node.js runtimeGeneral configuration recommendations
Installing DockerCompiling an UberjarBuilding a Docker container for our app

Overview

"Learning ClojureScript" is a comprehensive guide to agile front-end development using the ClojureScript language. Through detailed explanations and examples, this book teaches you how to build interactive single-page applications while taking advantage of the functional nature of the language. You'll gain expertise in modern web application development, from setting up workflows to deploying production-ready code.

What this Book will help me do

Understand the fundamentals of the ClojureScript programming language, including syntax and functional programming principles.
Set up a productive interactive development workflow for coding and debugging in ClojureScript.
Develop single-page web applications using ClojureScript, focusing on interactivity and responsiveness.
Master advanced programming practices such as asynchronous programming, app routing, and real-time features in web apps.
Prepare ClojureScript projects for production by applying testing, optimization, and type-checking techniques.

Author(s)

Allen Rohner and None Jarvis bring their combined expertise and experience in functional programming and ClojureScript development to this book. Rohner has extensive experience in software engineering, specializing in scalable web application architecture, while Jarvis is known for his contributions to open-source Clojure and teaching roles. Together, they provide a clear and approachable guide that demystifies complex concepts for developers.

Who is it for?

This book is ideal for web developers curious about learning ClojureScript and its advantages for front-end development. Readers should have some prior knowledge of JavaScript and web development basics, although familiarity with Clojure is not required. Whether you're seeking to expand your functional programming skills or adopt a more productive workflow for web applications, this book is for you.