Support for attributes and builders in Perl has evolved over various versions, bringing enhancements that facilitate object-oriented programming. The introduction of features like 'attributes' and 'builder methods' has made it easier for developers to define class attributes with specific behaviors and default values. In modern Perl, the incorporation of Moose and other object system frameworks has further streamlined the process of building classes and managing object attributes.
# Example of using Moose for building a class with attributes
package Person {
use Moose;
has 'name' => (
is => 'rw',
isa => 'Str',
default => 'John Doe',
);
has 'age' => (
is => 'rw',
isa => 'Int',
builder => '_build_age',
);
sub _build_age {
return 30;
}
}
my $person = Person->new();
print $person->name; # Outputs: John Doe
print $person->age; # Outputs: 30
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