What does observable pipe do?

Related questions

1. What is pure and impure pipe?
2. What is pure pipe?
3. What is pipe RxJS?
4. What is memory leak in angular?
5. What is named pipe and unnamed pipe?
6. What is pure and impure pipe in angular?
7. Is promise better than observable?
8. How does pipe work?
9. Why observable is used in angular?
10. What is pipe function?

Tags

1. #functional
2. #instance
3. #accepts
4. #filter
5. #separated
6. #operators
7. #execute
8. #chain
9. #arguments
10. #combine
11. #finally
12. #mergescan
13. #passed
14. #sequence
15. #observable
16. #comma
17. #returns