How can I import a function from a file in racket?

问题

I'm sure this is am extremely basic question, but I have two files and I want to import one function from that file into the other one. Is there a way to do so?

回答1:

You can use provide within a module to export definitions to other modules that import it with require:

;; a.rkt
(provide f)
(define (f x)
  (displayln (add1 x)))

;; b.rkt
(require "a.rkt")
(f 3) ; => 4

For more information, see the docs.

来源：https://stackoverflow.com/questions/34756477/how-can-i-import-a-function-from-a-file-in-racket