Migrating the [NotifyPropertyChanged] aspect

Metalama's equivalent to PostSharp's [NotifyPropertyChanged] aspect is the [Observable]. For details, see Metalama.Patterns.Observability.

Metalama's implementation strategy is completely different from PostSharp's. Where PostSharp maintained an in-memory dependency graph at runtime, Metalama does most of the work at build time and doesn't maintain complex data structures at runtime.

API mapping

Most features of PostSharp's [NotifyPropertyChanged] aspect are available in Metalama under a different name:

Feature gaps

The following features haven't been implemented in Metalama yet:

• You can't implement the INotifyPropertyChanging interface.
• The PropertyChanged events can't be implemented as weak events—they hold references to their handlers.
• Suppression of false positives isn't implemented—the PropertyChanged event can be signaled even when there's no change in the property.