One of the most exciting changes to Dart, in Dart 2, is the holy grail combination of removing optional types and adding powerful type inference. The former means there is no more differentiation between a “checked” (type annotations kind of matter) and “unchecked” mode (type annotations don’t matter at all)…

I participated in Ludum Dare 40 with a group of friends who are mostly non-programmers. The end result of our terrible game is here (source code). I thought about several different languages to build with, but settled on a browser-based game for ease of use (nobody needs a special device)…

Data binding, or updating the view (usually UI) from your application’s code is probably the holy grail of browser-based web frameworks — the reason they exist, and the reason web standards have tried to shift in order to make it easier to “use the platform”. In this blog post I’ll…

As an example of how to build FRP (functional-reactive program[s]) in Dart, I decided to try building an FPS counter — that is, an utility to determine what the frame rate of a running application is. I decided I’d like to have a few goals: The library, hereby package:fps, should…

One of the most common questions I get for Dart, even within Google, is “how do I make my code more reusable?”. We work on large projects like AdWords, AdSense, and Google’s internal CRM, Greentea — which are all written in Dart. I was working with an engineer who was…

We’re constantly talking on the Dart team about how to improve the language (like non-nullable types), and one of the features that has come up informally a few times is function overloading: In some programming languages, function overloading or method overloading is the ability to create multiple methods of the…

Well, no. Dart has a single thread, or event-loop, of execution. However, commonly you’ll see a code using Future have a comment something to the effect of “// Avoid race conditions: Check for …”. What does that mean? New to futures? Read asynchronous programming: Futures on the Dart site. While…

It’s impossible to deny that immutability is a hot topic in programming, especially front-end programming. Libraries like Immutable.js and other concepts like unidirectional data flow have argued it’s easier to reason about data when it doesn’t change underneath you: In object-oriented and functional programming, an immutable object (unchangeable object) is…

A little known fact: Angular Dart has supported lazy loading since 1.0. What does lazy loading (called deferred loading in Dart) do for you? You can break up your application into small, dependent parts It works on every browser — automatically without polyfills Use fully typed Dart code — even…