Attributes
Explore the use of attributes in Perl to attach metadata to variables and functions. Learn how attributes enable metaprogramming, define behavior with handlers, and improve code clarity and maintainability. Understand the benefits and pitfalls of attributes and discover recommended approaches for effective use.
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Named entities in Perl—variables and functions—can have additional metadata attached in the form of attributes. These attributes are arbitrary names and values used with certain types of
Declaration of attributes
Attribute declaration syntax is awkward, and using attributes effectively is more art than science. Most programs never use them, but they offer clarity and maintenance benefits when used well.
A simple attribute is a colon-preceded identifier attached to a declaration:
my $fortress