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4d47's solution

to Hello World in the Perl 5 Track

Published at Jul 13 2018 · 0 comments
Test suite

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.


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.


#!/usr/bin/env perl
use strict;
use warnings;
use Test::More tests => 2; # This is how many tests we expect to run.
use FindBin qw($Bin);
use lib $Bin, "$Bin/local/lib/perl5"; # Look for modules inside the same directory as this test file.
use HelloWorld qw(hello);

can_ok 'HelloWorld', 'import' or BAIL_OUT 'Cannot import subroutines from module';

# Run the 'is' subroutine from the 'Test::More' module, with three arguments.
  hello,           # Run the 'hello' subroutine, which is imported from your module.
  'Hello, World!', # The expected result to compare with 'hello'.
  'Say Hi!'        # The test description.
package HelloWorld 2;

use strict;
use warnings;
use Exporter 'import';
our @EXPORT_OK = qw(hello);

sub hello {
  'Hello, World!'


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