craigmaloney's solution to Hello World on the Scheme track

Instructions

Test suite

Solution

Note:

This solution was written on an old version of Exercism. The tests below might not correspond to the solution code, and the exercise may have changed since this code was written.

The classical introductory exercise. Just say "Hello, World!".

"Hello, World!" is the traditional first program for beginning programming in a new language or environment.

The objectives are simple:

Write a function that returns the string "Hello, World!".
Run the test suite and make sure that it succeeds.
Submit your solution and check it at the website.

If everything goes well, you will be ready to fetch your first real exercise.

Source

This is an exercise to introduce users to using Exercism http://en.wikipedia.org/wiki/%22Hello,_world!%22_program

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

hello-world-test.scm

;; Load SRFI-64 lightweight testing specification
(use-modules (srfi srfi-64))

;; Suppress log file output. To write logs, comment out the following line:
(module-define! (resolve-module '(srfi srfi-64)) 'test-log-to-file #f)

;; Require module
(add-to-load-path (dirname (current-filename)))
(use-modules (hello-world))

(test-begin "hello-world")

(test-assert "Say Hi!"
             (equal? (hello)
                     "Hello, World!"))

(test-end "hello-world")

(define-module (hello-world)
  #:export (hello))

(define hello
  (lambda* ( #:optional (x "World"))
    (string-append "Hello, " x "!")))

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craigmaloney's solution

to Hello World in the Scheme Track