What is the equivalent annotation for the old map/@attr in AngularDart?

问题

The AngularDart tutorial (at of the time of this writing), recommends binding component fields to attributes like this:

map: const {
  'max-rating' : '@maxRating',
  'rating' : '<=>rating'
}

However, I see also that Angular has @NgOneWay, @NgTwoWay, and others. I can't find the annotation for @. Which annotation do I want if I want the same semantics as @maxRating ?

Apparently:

@NgOneWay == =>

@NgTwoWay == <=>

@NgOneWayOneTime == =>!

??? == @

回答1:

I think @NgAttr is what you are looking for.

For callbacks there is also @NgCallback == & - just to complete your list.

来源：https://stackoverflow.com/questions/21422743/what-is-the-equivalent-annotation-for-the-old-map-attr-in-angulardart