Dart 1.1 Claims Up To 25% Faster JavaScript

[phoronix]

Phoronix: Dart 1.1 Claims Up To 25% Faster JavaScript

Just two months after Google declared Dart production ready with its 1.0 release, Dart 1.1 was released on Thursday and it now claims to be up to 25% faster than its JavaScript performance...

http://www.phoronix.com/vr.php?view=MTU3Mzk

[Pajn]

This is a great job. Getting performance parity with handwritten Javascript
for more and more workloads means that it becomes a viable alternative
to Javascript today, even without native Dart support in any of the major
browsers.

The only thing that concerns me is how masive the output becomes when
using mirrors (reflection) which makes AngularDart much bigger than AngularJs
for no good reason.

[carewolf]

25% doesn't seem like much for a completely new language. Not much reason to switch then.

[Pajn]

25% doesn't seem like much for a completely new language. Not much reason to switch then.

This is about Dart compiled to Javascript compared against handwritten Javascript.
Native Dart runs much faster.

However until browser start supporting native Dart there needs to be a way to
run Dart code, else we could only use it for example apps and stuff, with Dart2JS
we can write production code with it.

[mark45]

Afaik even Chrome doesn't support Dart out of the box. But Dart is better than JS hands down.

[profoundWHALE]

25% doesn't seem like much for a completely new language. Not much reason to switch then.

If you clicked the link before commenting, you'd see that Dart->JavaScript is 25% faster than their previous Dart->JavaScript. You'd also see that the new Dart->JavaScript is now comparable to just plain JavaScript and their native Dart code is twice as fast as JavaScript.

[Marc Driftmeyer]

You don't wait 15 years to move against a product that is over 20 years mature and has the mind share of the globe for client-side library support.

Google:

Dart is a new platform
for scalable web app engineering

Whatever

Dart is class based and object oriented, without being dogmatic.

In short, we want to copy Objective-C/Cocoa but using our own approach and frameworks with C++/Java syntax, sugar coded with traditional

Objective-c brackets for List literals, as one example.

So you have abstract C++ class syntax/Java syntax with ObjC mixed syntax. Puke.

Pick one.

[newwen]

Generated js is 25% faster on Google's own V8 engine. What about the performance comparison with Mozilla's SpiderMonkey?

[Lennie]

asm.js

Generated js is 25% faster on Google's own V8 engine. What about the performance comparison with Mozilla's SpiderMonkey?

Sounds to me like asm.js might be a much bigger win. It has demonstrated far, far larger improvements:

http://kripken.github.io/mloc_emscripten_talk/#/28