Your example accessor has a problem:
package Local::Class;
sub new
{
my $class = shift;
bless +{ A=>'default' };
}
sub access_A
{
my ($self, $new_a) = @_;
$self->{A} = $new_a if $new_a;
return $self->{A};
}
package main;
use 5.010;
my $obj = Local::Class->new;
$obj->access_A(1);
say $obj->access_A; # says 1
$obj->access_A(2);
say $obj->access_A; # says 2
$obj->access_A(0);
say $obj->access_A; # says 2 !!!
A better way of writing that accessor would have been:
sub access_A
{
my $self = shift;
$self->{A} = shift if @_;
return $self->{A};
}
(Or even better, use Moose so that you don't need to worry about writing accessors.)
perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'
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