ClojureScript: Up and Running: Functional Programming for by Stuart Sierra, Luke VanderHart

By Stuart Sierra, Luke VanderHart

How one can construct whole client-side purposes with ClojureScript, the Clojure language variation that compiles to optimized JavaScript. This hands-on advent exhibits you the way ClojureScript not just is analogous to JavaScript—without the flaws—but additionally helps the entire semantics of its guardian language. You’ll delve into ClojureScript’s immutable facts buildings, lazy sequences, first class features, macros, and aid for JavaScript libraries.

No prior event with Clojure or ClojureScript is important. If you’re accustomed to JavaScript, HTML, CSS, and the DOM, you’ll speedy realize that ClojureScript has a similar succeed in as JavaScript, yet with extra power.

* begin writing ClojureScript code with the Leiningen construct system
* learn the way the ClojureScript compiler works to supply optimized JavaScript
* Use JavaScript services and libraries at once from ClojureScript code
* discover services in Clojure’s series library resembling map, lessen, and filter
* Use macros to outline new keep an eye on constructions or embed domain-specific languages
* assemble manually or script your individual workflow with ClojureScript’s compiler tools
* combine ClojureScript with Clojure at the JVM to construct strong client-server functions

Show description

Read or Download ClojureScript: Up and Running: Functional Programming for the Web PDF

Best javascript books

Beginning Android Web Apps Development: Develop for Android using HTML5, CSS3, and JavaScript

With starting Android net Apps improvement, you'll the right way to practice HTML5, CSS3, JavaScript, Ajax and different net criteria to be used at the Android cellular platform, by means of construction various enjoyable and visually stimulating video games and different internet functions! If you've performed a few easy net improvement, and you are looking to construct your talents to create exceptional web apps, you'll find everything you search within the discussions and examples during this e-book.

Pro Windows 8 Development with HTML5 and JavaScript

Apps are on the middle of home windows eight, bringing wealthy and fascinating studies to either capsule and machine clients. home windows eight makes use of the home windows Runtime (WinRT), an entire reimagining of home windows improvement that helps a number of programming languages and is outfitted on HTML5, CSS and JavaScript. those purposes are the way forward for home windows improvement and JavaScript is ideal language to exploit this interesting and versatile atmosphere.

Ruby in a Nutshell: A Desktop Quick Reference (In a Nutshell (O'Reilly))

Ruby is a completely natural object-oriented scripting language written in C and designed with Perl and Python services in brain. whereas its roots are in Japan, Ruby is slowly yet without doubt gaining flooring within the US. The aim of Yukihiro Matsumoto, author of Ruby and writer of this e-book, is to include the strengths of languages like Perl, Python, Lisp and Smalltalk.

Erlang Programming: A Concurrent Approach to Software Development

This e-book is an in-depth advent to Erlang, a programming language excellent for any scenario the place concurrency, fault tolerance, and speedy reaction is key. Erlang is gaining common adoption with the appearance of multi-core processors and their new scalable method of concurrency. With this advisor you are going to easy methods to write advanced concurrent courses in Erlang, despite your programming history or adventure.

Additional info for ClojureScript: Up and Running: Functional Programming for the Web

Example text

Just as one example, let’s consider handling keypresses in IE vs. Firefox. Let’s say we want to hook the keyDown event for the current document. KEYDOWN); The basic keyDown() function signature for either browser is this: function keyDown(e) { } In Firefox, the parameter e will be an event object passed in that describes the keypress event. In IE, however, this parameter is not passed in at all because IE uses an event model called event bubbling. To get a reference to the event object in IE, you need to reference the event property of the window object.

Or that Frank isn’t the name of my father (which it just happens to be)? Clearly, the call syntax for Person2 is better in terms of code clarity. The code is also a bit more easily extensible with that approach. This is a relatively minor point, but it is an element of style that has only in the past few years come into the minds of JavaScript developers. Early on, you would rarely have seen the approach used in Person2. You would have instead seen function calls with oodles of arguments. But if you asked C++ developers how they would have coded this, you almost certainly would hear an answer involving some sort of collection, maybe a value object being passed in, or something along those lines.

To get a reference to the event object in IE, you need to reference the event property of the window object. This isn’t a difference in JavaScript itself; this is a difference in the event-handling model in the DOM of each browser. To take the example further, once you have a reference to the event object, you will quite likely want to figure out which key was actually pressed. Again, there are DOM differences to overcome. In IE, the event object exposes a keyCode property. In Firefox, the corresponding property is called charCode.

Download PDF sample

Rated 4.53 of 5 – based on 7 votes