Dart Singleton?

Dart_Singleton_Maybe

class MyClass{
  static MyClass _ref;
  
  static MyClass get context() => _ref == null ? new MyClass() : _ref;

  factory MyClass(){
    if (_ref != null) return _ref;
    
    _ref = new MyClass._internal();
    
    return _ref;
  }
  
  MyClass._internal(){}
  
}

So is _internal() meant to be an internal constructor? I had no idea that would work but it makes sense to me.

What does the factory keyword do in this context? I've only seen it in relation to interfaces.

The factory constructor acts as a proxy in this case, and simply returns the same object (_ref) if it is already initialized.

Using the underscore on the named instance constructor MyClass._internal() is supposed to prevent it's usage outside of library boundaries.

So I think I have a good singleton pattern here, at least outside of library boundaries.

Looks good to me. :)

Nice