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Coreimpl finally waves goodbye, and more breaking changes

Looks like the work on Dart libraries is really picking up. It was announced that dart:coreimpl is being removed, and some methods on numbers are now more simple getters.

dart:coreimpl will be removed

Anders Johnsen wrote to the Dart mailing list:

I've already started moving implementation classes out of dart:coreimpl and making them a private member of dart:core. I'll continue to move the rest over the week. 
Once the move is done, we intent to re-expose some of the same functionality in other libraries. 
If you are currently using any of the classes in dart:coreimpl, you can make a local copy for your program to use, and file a bug for a feature request in the library area on http://dartbug.com/new.
isNaN and friends are now getters

Florian Loitsch also wrote:

Starting with r13974, you'll find that isNaN, isInfinite, isEven, isOdd, isNegative on numbers are now getters. In the same CL I updated the fixnum pkg where I also change isZero, isMaxValue and isMinValue. 
https://codereview.chromium.org/11227042/diff/2001/lib/core/num.dart 
https://codereview.chromium.org/11227042/diff/2001/pkg/fixnum/intx.dart 

In general the fix should be easy:
d.isNaN() -> d.isNaN, ...

We suspect this is only the beginning. Stay tuned on the Dart mailing list or ask questions on Stack Overflow.

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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…