Angular forEach Significantly slower than Lodash forEach

[JLLeitschuh]

Is there any way that the performance of angular.forEach could be improved? Lodash seems to have a pretty quick implementation.
https://jsperf.com/angular-foreach-vs-native-for-loop/148

[Narretz]

Speed ups are always nice. One thing to keep in mind is that angular's functions often do additional work that is specific to angular. I'm not sure if this is the case with forEach. If you want, you can create a PR with another implemenation and we'll see about it.

[linoleum-js]

I find out that it's slow because of 'in' operator, which used according to specs

When this statement is omitted, it's getting much faster (jsperf), but i guess the "it should not invoke the iterator for indexed properties which are not present in the collection" restriction is important (is it?), because that's the way the native forEach works.
Though, lodash ignore it :)

Also, it seems to be a bit faster, when we call only if context has been passed (otherwise, just invoke it).