Why reducers are pure functions?

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Tags

1. #reducers
2. #items
3. #value
4. #accumulates
5. #reducer
6. #javascript
7. #array
8. #single
9. #result
10. #method
11. #iterates
12. #often
13. #function
14. #generate
15. #signature
16. #effects
17. #should
18. #functions
19. #through
20. #accumulator
21. #which
22. #meaning
23. #reduce