How has support for attributes pragma changed across recent Perl versions?

In recent Perl versions, support for the attributes pragma has evolved, introducing new features and improvements that enhance code readability and maintainability. The attributes pragma allows developers to specify additional information about subroutines, variables, and packages, enriching the capabilities of Perl programs.

One of the significant updates in newer Perl versions is the introduction of more flexible attribute handling, which allows attributes to be applied more seamlessly. Additionally, support for built-in attributes has been expanded, providing developers with more options for optimization.

Here's an example demonstrating the use of the attributes pragma:

use attributes; sub example { my ($arg) = @_; return $arg * 2; } # Adding an attribute to the 'example' subroutine use attributes sub => 'example', 'my_attribute' => 'some_value';

Perl attributes pragma subroutines variables code readability maintainability