What are best practices for working with method modifiers (before/after/around)?

Method modifiers in Perl allow you to alter the behavior of existing methods without changing their actual code. These modifiers can be used to add behavior before (before), after (after), or around (around) method calls. Here are some best practices to follow when working with method modifiers.

Best Practices for Method Modifiers

• Keep It Simple: Avoid complex logic within modifiers to ensure clarity and maintainability of the code.
• Use Explicit Modifiers: Be clear about your intentions—use before, after, or around modifiers explicitly to avoid confusion for anyone reading the code.
• Limit Modifier Scope: Apply modifiers only to methods that truly need them. Adding modifiers to every method can lead to performance overhead and make debugging difficult.
• Document Your Modifications: Always document the purpose and effects of any modifier applied to a method.
• Test Thoroughly: Since modifiers change method behavior, make sure to test units thoroughly to ensure expected functionality remains intact.

Example

        package MyClass;

        use Moose;
        use Moose::Autobox;

        # Define a simple method
        sub my_method {
            my $self = shift;
            return "Original behavior";
        }

        # Applying a before modifier
        before 'my_method' => sub {
            my $self = shift;
            print "Before my_method called\n";
        };

        # Applying an after modifier
        after 'my_method' => sub {
            my $self = shift;
            print "After my_method called\n";
        };

        1;