Field notes, primers, and case-tested patterns from Rangle on agentic systems, design systems, frontend, and AI strategy.
Showing 493–502 of 502 posts
Any non-trivial JavaScript requires dealing with asynchronicity. JavaScript can't wait, so if something that you want is not available right away, your code can't just sit around until the result comes back. Instead, the baseline solution is a callback: you provide a function that will be called when the result is either available or the operation is known to have failed.
Frontend Development
At rangle.io we've been fans of the functional programming style for a while and have used Underscore and Lodash extensively on many projects. However, recently we started using a new library, Ramda, that on the surface seems very similar to Underscore, but which turns out to be different in a small but significant way. Ramda offers roughly the same set of methods as Underscore, but the way it offers them makes functional composition easy.
Frontend Development
Do you love JavaScript as much as we do? This week we're starting to release a series of puzzles for those of you who are into JavaScript … If you know the answer, feel free to post in the comments section below.
Frontend Development
Building mobile apps often requires working with location information. While, the Cordova geo-location plugin makes it quite trivial to get the latitude and longitude values for the user's current location, what we often want is location identifiers that are meaningful to the user - and not necessarily corresponding to the place where the user is right now. Below we look at two ways at acquiring meaningful location identifiers.
Frontend Development
All the talk of Angular 2.0 at ng-europe at the end of October has left a lot of folks worried about the prospect of a revolutionary change. Indeed, Angular 2.0 presents a major departure from Angular 1.2 and Angular 1.3. Gone are 1.x style controllers and $scope. No more jqLite. Directives, now known as
When I get a fresh Macbook and plug it in for the first time there are some essential apps that I install straight away. I've compiled a list of free tools we recommend to increase productivity for Mac users at rangle.io. Many of these apps are general enough that they would benefit a Designer, Front End Developer or Back End Developer. Obviously the more Developer centric tools are focused on Javascript development since thats what we do. We'd love to hear from you if there are any apps you can't live without that we should add to our toolkit.
It's being rewritten around mobile. It's being rewritten around services. This is the API revolution built on REST and JSON and the strategic need for SaaS solutions to talk to other SaaS solutions.
Modernize Your Stack
The Ionic Framework is an open source front-end framework for developing hybrid PhoneGap/Cordova mobile apps with HTML5. We're big fans.
Frontend Development
Working with JavaScript requires mastering asynchronous code. The two most common patterns for doing so are callbacks and promises. Promises are great because they offer us more flexibility: if a function gets a promise from another function it can either attach callbacks to it or just pass the callback to the caller.
Frontend Development
Rangle.io is a JavaScript-only consulting and development company focused on a new kind of web application where most of the application runs in the browser.
Modernize Your Stack