How to 'unwatch' an expression

Question

Say I have an ng-repeat with a big array.

When ng-repeat runs, it adds every element of that array to an isolated scope, as well as having the array itself in a scop

Answer 1

If you are using angularjs 1.3 or above, you can use the single bind syntax as

{{item}}

This will bind the value and will remove the watchers once the first digest cycle is run and the value changes from undefined to defined for the first time.

A very helpful BLOG on this.