Add compareSelectionBy property to DataTable.

[ribizli]

Not only that the deep equals solution can result in performance problems, I don't see any reason to use it.

There should be an option (e.g. selectionByRef) to use strict equals instead of deep equals.

[cagataycivici]

Makes sense for sure, for deep equals there is dataKey to speed it up btw.

[cagataycivici]

Added compareSelectionBy="equals | deepEquals". Made it a string as I have a plan to introduce a 3rd faster option.

[ribizli]

What if there isn't a suitable dataKey? At least that shoud support a function input to use identity...

[cagataycivici]

If there is no dataKey, then equals (identity) or deepEquals (equality).

[ribizli]

I've read your answer too late, sorry.