Object Template Language Enhancement

[DartBot]

This issue was originally filed by [email protected]

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Please provide any additional information below.

Add an additional template 'object' with similar semantics as Scala.

This one concept subsumes and simplifies several current concepts in Dart.

1. Supports safe lazy singleton objects.
2. Namespaces typedefs, enums and standalone functions which are not always desirable to be at toplevel. (Acts as a lazy init'd static module)
3. Separate grouping of static methods from class template. Alleviates the need of the 'static' keyword for static methods.
4. Does not require special syntax and special treatment for named constructors.
5. Supports near equivalent benefit for factory constructors without requiring special syntax.

All with just one concept.

class Point {
  Point (x, y) ...
   ...
}

object Point {
  // static methods, variables
  // factory methods
  
  Point _zero = new Point (0,0) // singleton zero value
  Point zero () => _zero
  Point apply (x,y) ...
}

new Point (1,2) // ctor
Point.zero () // named
Point (3, 4) // factory

[gbracha]

This is all very cool. I could tell you even cooler things you can do in a language to make it more minimal, uniform and simple. However, Dart is not trying to stay in the comfort zone of the average programmer.

Anyway, you know all that. I am closing this at the request of the submitter.

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Removed Type-Defect label.
Added Type-Enhancement, WontFix labels.