alpine2.tar.gz

Perl is one of the most popular text processing languages in the world. It allows you to create extremely efficient text parsers for all sorts of applications.

This interactive course will help you get up to speed on Perl, starting off with basic concepts like loops, strings, and arrays. You'll build your way up to more complex topics like data structures and packages.

No background knowledge is needed. Anyone willing to understand the principles and syntax of Perl to use it in the future will find this course useful.

Learn Perl from Scratch

What are the member variable names for the following package?
```perl
package person;

sub new {     # constructor
   my $class = shift;
   my $self = {
      name  => shift,
      address => shift,
   };
   
   bless $self, $class;
   return $self;
}
```

What are the member variable names for the following package?
<pre><code class="language-perl">package person;

sub new { # constructor
 my $class = shift;
 my $self = {
 name =&gt; shift,
 address =&gt; shift,
 };
 
 bless $self, $class;
 return $self;
}
</code></pre>

The `new` keyword can be used to create an object of a package?

The <code>new</code> keyword can be used to create an object of a package?

What is the output of the following code?
```perl
package person;
sub new {     # constructor
   my $class = shift;
   my $self = {
   # member variables 
      name  => shift,
      address => shift,
   };
   print "Name is $self->{name}";
   bless $self, $class;
   return $self;
}

$object = new person("Alex", "Canada");
```

What is the output of the following code?
<pre><code class="language-perl">package person;
sub new { # constructor
 my $class = shift;
 my $self = {
 # member variables 
 name =&gt; shift,
 address =&gt; shift,
 };
 print &quot;Name is $self-&gt;{name}&quot;;
 bless $self, $class;
 return $self;
}

$object = new person(&quot;Alex&quot;, &quot;Canada&quot;);
</code></pre>

Check your understanding of classes in Perl by solving the quiz in this lesson. 

Quiz on Packages

Check your understanding of classes in Perl by solving the quiz in this lesson.

Getting Started

Variables

Operators

Conditional Statements

Loops

Subroutines

Strings

Arrays

Packages

Conclusion

Quiz on Packages