#9
conj on sets
| Difficulty: | Elementary | 
| Topics: | 
When operating on a set,
the conj function returns a new set with one or more keys "added".
![]()  | (= #{1 2 3 4} (conj #{1 4 3} __)) | 
| Difficulty: | Elementary | 
| Topics: | 
![]()  | (= #{1 2 3 4} (conj #{1 4 3} __)) |