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Watch Dart's plan to make it easier for you to build web apps

Posted by Seth Ladd

Bob Nystrom, engineer with the Dart project, recorded a screencast of his presentation titled "Dart's plan to make it easier for you to build web apps".



From the video's abstract:
When we announced Dart, it kicked up a bit of a dust storm. In this talk, I discuss the challenges that Google and others face when building web apps today. I introduce Dart and show how its features were designed specifically to address some of those challenges.
You'll see how Dart protects you from many of the dark corners and sharp edges of JavaScript and the DOM. When your programs grow and evolve over time, you'll see how Dart can help keep your app nimble and maintainable. Thanks to Dart's Dart to JavaScript compiler, you'll see how you get all of that while still being able to run on any browser that supports modern JS and without the bad karma of fracturing the web.

You can learn more about Dart at http://www.dartlang.org and let us know what you think at http://dartlang.org/mailing-list. Enjoy!

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Const, Static, Final, Oh my!

Posted by Seth Ladd

(This is an "oldie but a goodie" misc@dartlang.org post originally written by Bob Nystrom. It is being posted here as the explanations still ring true.)

Bob writes:


"static", "final", and "const" mean entirely distinct things in Dart:

"static" means a member is available on the class itself instead of on instances of the class. That's all it means, and it isn't used for anything else. static modifies *members*.

"final" means single-assignment: a final variable or field *must* have an initializer. Once assigned a value, a final variable's value cannot be changed. final modifies *variables*.

"const" has a meaning that's a bit more complex and subtle in Dart. const modifies *values*. You can use it when creating collections, like const [1, 2, 3], and when constructing objects (instead of new) like const Point(2, 3). Here, const means that the object's entire deep state can be determ…