Perl 继承和子方法

由于某些原因，我无法访问边界对象上的子方法。我希望能提供尽可能详细的答案，因为我对perl的继承仍然有点困惑，尤其是bless部分。此外，对于总体设计，任何建设性的批评都是很好的

Generic.pm（基类）

下午六时

package AccessList::Extended;
use strict;
use warnings;
use AccessList::Generic;

use base qw(AccessList::Generic);

sub new {
    my ($class, @args) = @_;
    my $self = $class->SUPER::new(@args);
    return $self;
}


1;

下午六时

package AccessList::Extended::Boundary;
use strict;
use warnings;
use AccessList::Extended;

use base qw(AccessList::Extended);

sub new {
    my ($class, @args) = @_;
    my $self = $class->SUPER::new(@args);
    return $self;
}

sub get_acl_information {
    my ($self) = @_;
    return;
}

1;

失败测试

can_ok('AccessList::Extended::Boundary', 'get_acl_information');

错误消息

#   Failed test 'AccessList::Extended::Boundary->can('get_acl_information')'
#   at t/b1.t line 42.
#     AccessList::Extended::Boundary->can('get_acl_information') failed
# Looks like you failed 1 test of 2.

---

我看不出你的帖子有任何问题。问题肯定出在你没有发布的内容上。您是否忘记加载AccessList:：Extended:：Boundary

$ find -type f
./AccessList/Extended/Boundary.pm
./AccessList/Extended.pm
./AccessList/Generic.pm

$ perl -E'
   use Test::More tests => 1;
   use AccessList::Extended::Boundary;
   can_ok("AccessList::Extended::Boundary", "get_acl_information");
'
1..1
ok 1 - AccessList::Extended::Boundary->can('get_acl_information')

---

顺便说一句，没有必要在派生类中编写单独的构造函数，除非它们需要做一些特殊的事情。父类构造函数将被继承。请注意，

base

加载从中继承的模块，因此无需单独加载。感谢您的帮助和建议。非常有用。

$ find -type f
./AccessList/Extended/Boundary.pm
./AccessList/Extended.pm
./AccessList/Generic.pm

$ perl -E'
   use Test::More tests => 1;
   use AccessList::Extended::Boundary;
   can_ok("AccessList::Extended::Boundary", "get_acl_information");
'
1..1
ok 1 - AccessList::Extended::Boundary->can('get_acl_information')