Meteor watchers handling

As a Java developer for over a decade, I decided to give Meteor a try and I have to say I love it. A few days ago I spoke with someone who is a nodeJS developer and yet did not have any experience with Meteor so we started talking about it.

At one point he said that he had some issues with watchers in Angular and expressed concern about a similar possibility in Meteor, and as a Meteor n00b, I had no answer… I assume that Meteor deletes watchers when switching from one view to another and handles that issue properly, but I was not sure so I thought I’d ask here.

So, how does Meteor handle the two-way binding watchers count and is there such a thing as one time binding in Meteor?