DART language

This past weekend, the Google Elections team introduced their Elections Explorer for Brazil: a live, real-time election results experience for the presidential, gubernatorial, senate, and chamber races in Brazil. This is the Google Elections team's ... [More] second app built with Dart, and their first to use Polymer.The Google Elections team is happy with their experience. They write:"We love writing Dart because it's fast, compact, and sane. Great tools and a readable language give us the confidence we need to move quickly. But adding... [Less]

Folks, I'm happy to tell you that we've just tagged release 1.0 (industrious-pangolin) of AngularDart on github.In 1.0, you'll find the last of our changes to the fundamental nature of the AngularDart APIs. We've simplified our design to eliminate ... [More] much of the boilerplate that was involved in writing new components in our previous 0.x versions. We hope that the result is an AngularDart that's easier to understand and use.For details on what's new, see the changelog.Declaring 1.0 also represents a stability milestone for the AngularDart team. From here on out, you can... [Less]

Developers can now easily install and update Dart SDK and Dartium on Macs with Homebrew, a popular package manager for Mac OS X. Both the stable SDK and (for the more adventurous) the dev channel SDK are available via Homebrew.It's easy to get ... [More] started. After you install Homebrew, run these commands to install the stable channel Dart SDK and Dartium:  brew tap dart-lang/dart  brew install dart  brew install dartium # if you build Dart client appsWhen there is a new build of the SDK or... [Less]

I am working on the second in the series of screencasts for readers of the “Extras” edition of Patterns in Polymer. Try as I might, I cannot get it down to under 12 minutes. I would much prefer that they run ~5 minutes, so tonight I explore alternate ... [More] approaches to code what I need.The goal of this screencast is to build a working Polymer element. I am not trying to get all functionality in place in this screencast. Rather, I am trying to get everything in the right place to build the real thing.... [Less]

I was able to test CSS styling last night, making getComputedStyle() my new best friend. Seriously, I have wanted to do just this kind of testing before, but never knew it was possible. Which begs the question, is it possible in Dart?Presumably, it ... [More] is. Especially since getComputedStyle() is part of core dart:html. Even better, getComputedStyle() in Dart is available on any Element, so no need to run it through the top-level window version.As yesterday, I am testing some Bootstrap styles applied to a custom Polymer element for a chapter in... [Less]

I had little luck using my apply-author-styles JavaScript Polymer element in Polymer.dart last night. Well, I had great luck if you count hand-editing Core Elements in order to get it to work. Personally, I do not count that as good luck.What I do ... [More] count as good luck is readers like James Hurford writing to tell me about potential solutions that I may have overlooked. In this case, I have not tried the custom_element_apigen Dart Pub package, which “lets you wrap custom elements written with polymer.js and provide a Dart... [Less]

I maintain that there are times that developers will want web components to look like the rest of their site, not like Material Design. Toward that end, I include a chapter on Bootstrap CSS in Patterns in Polymer. Today, I double check that my ... [More] solution stills works after upgrading all code the latest versions of Polymer.dart (for the Dart version of the book) and Polymer (for the JavaScript version of the book). And, thankfully, my solution does continue to work:One... [Less]

I maintain that there are times that developers will want web components to look like the rest of their site, not like Material Design. Toward that end, I include a chapter on Bootstrap CSS in Patterns in Polymer. Today, I double check that my ... [More] solution stills works after upgrading all code the latest versions of Polymer.dart (for the Dart version of the book) and Polymer (for the JavaScript version of the book). And, thankfully, my solution does continue to work:One... [Less]

The bad news is that I have a weird message popping up in some chapter projects from Patterns in Polymer. The good news is that I finally have the project code for every single chapter in under test (Dart and JavaScript). Some chapters have better ... [More] test coverage than others, but coverage, once established, will only improve. But what good is having tests if the underlying code is producing warnings?This may be specific to Polymer.dart—I have not seen it in any of the JavaScript... [Less]

Dart recently released official Docker Images for Dart. Docker is not something I’ve looked closely at in the past however I thought that this would make a good excuse to do so. If you’re not sure what Docker is, I’d recommend first checking out the ... [More] official description. I have a number of components for my stack that I’d like to containerize. Nginx to serve static content and act as a reverse proxy, a Mongo database and of course my Dart server-side code. Looking at it I immediately... [Less]