documentation for track by

[dev-rke]

Hi,

i do not understand what the "track by" expression of the repeat directive is good for. What can be achieved using track-by? It would be great to link an example in the docs. https://angular-light.readthedocs.org/en/latest/directive/al-repeat.html

[lega911]

It's not a filter, it's way to bind an item of array and DOM element, I will make an article about it.

It works the same way in angularjs, so you can google angularjs + track by.

[dev-rke]

Wow, i think i understood now. It still would be helpful to note this in the alight docs.