How to get comments from all posts of the VK API group?

Question

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How, using the wall.getComments method, to get new comments from any posts in the group?

Answer 1

1. collect post id via wall.get()
   
2. for each collect comments via wall.getComments() ,sort: desc
   
3. look at the received comments in the field dateor compare their id with previously saved ones to distinguish them from “old” comments.
   

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