How do I know if I have Xcode on my Mac?

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Tags

1. #location
2. #tools
3. #check
4. #window
5. #which
6. #preferences
7. #shows
8. #option
9. #xcode
10. #installed
11. #locations
12. #start
13. #click
14. #command
15. #choose
16. #general
17. #version