CODEWITHSUNDEEP
typesscheme
Jimmy Yang
Jimmy Yang

Reputation: 81

scheme transform type(string to list)

first, I want to transform the string type data to list type in order to implement the "reverse" function.But, I can't do it!The code like:

(define p (open-input-file "test.txt"))
(define c (read-line p))
(close-input-port p)
(string->list c)
(reverse c)

I do not know where the errors are? Why cant i just transform the type. I need ur guys help, thankS!

Upvotes: 0

Views: 62

Answers (1)

Óscar López
Óscar López

Reputation: 236142

Try this:

(reverse (string->list c))

Remember: in Scheme all standard list functions return values that must be used or stored somewhere, they don't modify objects in-place.

Upvotes: 1

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