Accessors and methods

define_instance_accessors

Class method, given a list of accessor names, defines a method for each that accesses the instance slot if called without arguments and sets the slot if called with a single argument. This should be invoked in a BEGIN block near the top of the subclass definition, so that Perl knows that these methods are defined.

new

Constructs a new object instance by blessing an empty hashref with the initial class arg, then treating the remaining arguments as keyword/value slot initializers, sending the first value of each pair as the method with the second value as its argument if the new object handles the method.