Initial data commit

Task/Classes/Perl/classes-1.pl

@@ -0,0 +1,19 @@
+{
+     # a class is a package (i.e. a namespace) with methods in it
+    package MyClass;
+
+     # a constructor is a function that returns a blessed reference
+    sub new {
+        my $class = shift;
+        bless {variable => 0}, $class;
+         # the instance object is a hashref in disguise.
+         # (it can be a ref to anything.)
+    }
+
+     # an instance method is a function that takes an object as first argument.
+     # the -> invocation syntax takes care of that nicely, see Usage paragraph below.
+    sub some_method {
+        my $self = shift;
+        $self->{variable} = 1;
+    }
+}

Task/Classes/Perl/classes-2.pl

@@ -0,0 +1,12 @@
+{
+    package MyClass;
+    use Moose;
+
+    has 'variable' => (is => 'rw', default => 0);
+    # constructor and accessor methods are added automatically
+
+    sub some_method {
+        my $self = shift;
+        $self->variable(1);
+    }
+}

Task/Classes/Perl/classes-3.pl

@@ -0,0 +1,7 @@
+use MooseX::Declare;
+class MyClass {
+    has 'variable' => (is => 'rw', default => 0);
+    method some_method {
+        $self->variable(1);
+    }
+}

Task/Classes/Perl/classes-4.pl

@@ -0,0 +1,4 @@
+my $instance = MyClass->new;    # invoke constructor method
+
+$instance->some_method;    # invoke method on object instance
+ # instance deallocates when the last reference falls out of scope