New Dart Editor : Stakes and Opportunities for Developers

Since november 7, 2012, Dart Language fans , have the possibilities to experience new features .
 
Available via this link,www.dartlang.org/editor changes inclide :

• New migration Clean Up - convert interface to abstract class with redirecting factory constructors.
• New option to capture and send a screenshot during feedback (Windows and Linux only for now).
• Performance optimizations for saving and analysis; saving and associated analysis is now 60% faster.
• Rename refactoring improvements - link constructor names and rename closure parameters.
• Better error messages and Quick Fixes for deprecated getter syntax and missing “part of” directive.
• Better type inference - use union of declared and checked types; search members in inferred type subtypes.
• Semantic highlighting improvements.
• Pub install is now run automatically on changes to pubspec
• Files View SDK node now shows just the libraries and no packages.
• Fix to remove stale contents from the index and analysis cache.
• Fix to make the Eclipse Dart nature play nice with other non-Dart natures (such as JS, Java, C, etc).
• Fix for a crashing bug in Dartium.
• Fix for an issue running the Dart VM on Windows.

Breaking Change List:

• Some HTML constructors changed to named parameters
• NotImplementedException is UnimplementedError
• IndexOfOutRangeException is now RangeError
• 'part of' is now required, breaking change coming
• noSuchMethod now follows spec.
• Unittest expect() uses new argument syntax