'How to get changed elements from Observable (rxjs)

I have question about Observable in rxjs. In my angular project I have a table with data(I'm using handsontable) and observable of this data, which I send to API. But I want to send only elements that have been changed in the table. Is there any operator in rxjs that can find changes in observable?



Solution 1:[1]

I'm not sure if I understood the problem correctly but maybe distinctUntilChanged will help.

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Solution 1 Alexey