might I suggest sequence-index-of instead?

what is the shortest syntactical way to take the car of an element and stick it to the end? (define x (list 1 2 3)) (flatten (cons (cdr x) 1)) ; (list 2 3 1) is what is im doing atm

(define (car-to-end lst) (foldr cons (list (car lst)) (cdr lst)))

Actually, this might be clearer: (define (car-to-end lst) (append (cdr lst) (list (car lst))))

thanks :9

Note: that definition will not work on empty lists.

another question , (read-json) returns an immutable hash, how would i make this into a mutable hash?

https://docs.racket-lang.org/reference/hashtables.html?q=hash-copy#%28def._%28%28quote._~23~25kernel%29._hash-copy%29%29

ahhhhh

was scanning for immutable->mutable-hash lol. thanks again :kissing_heart:

I hope string-index will work with two arbitrary strings. E.g., (string-index "abcdef" "de")