球拍，包括，要求和提供不起作用 [英] Racket, include, require and provide don't work

问题描述

我有一个名为functions.rkt"的文件，里面有一些函数.

I have a file with the name "functions.rkt", where I have some functions.

我正在处理另一个文件，我们将其命名为working.rkt"

And I am working in another file, let’s name it "working.rkt"

我在working.rkt"中尝试了以下(一一)以使用functions.rkt"中定义的函数:

I have tried the following (one by one) at "working.rkt" to use the function defined at "functions.rkt":

(require "functions.rkt")

(include "functions.rkt")

(provide "functions.rkt")

他们中的任何一个都没有工作，有什么帮助吗?

And anyone of them hasn’t worked, any help?

他们在同一条路上.

推荐答案

在functions.rkt"文件中:

In the file "functions.rkt:

#lang racket
(provide my-function)
(define (my-function x) (* 2 x))

在文件working.rkt"中:

In the file "working.rkt":

#lang racket
(require "functions.rkt")
(my-function 21)

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