Perl：如何访问另一个文件中提到的哈希值

Question

以下是一个包P4site.pm的内容

 our %regVal = (
        'wint' => {
            'Bangalore' => {
                'regSuffix' => 'reg_run',
                'P4PORT' => {
                    'rd' => '9876',
                    'pv' => '1991',
                },
            },
            'Noida' => {  
                 'activeRelease' => {
                    'rd' => {
                             '43.1' => ['rc011', 'nfm'],
                             '98.3' => ['rc008', 'nfm'],
                             '57.3' => ['rc001', 'nfm'],
                     },
                    'pv' => {
                             '43.1' => ['rc011', 'nfm'],
                             '98.3' => ['rc008', 'nfm'],
                             '57.3' => ['rc001', 'nfm'],
                     }
                }

我的 Perl 代码是：

use strict;
use warnings;
use FindBin qw($Bin);
use lib "$Bin/modules";
use P4site;
use Data::Dumper;

print Dumper(\%{$P4site::regVal});

foreach my $branches (sort keys %{$P4site::{regVal}})
{
    print "$branches is bracnhes\n";
}

为什么

sort keys %{$P4site::{regVal}}

没有给出任何输出？

perl 代码的输出是：

Name "P4site::regVal" used only once: possible typo at allUtilsCopyUserRunMach.pl line 14.
$VAR1 = {};

我期望在运行此 perl 代码后会打印 regVal 哈希的键（在 P4site 中提到）？我如何打印 regVal 哈希的键？

Answer 1

如果变量定义为

our %regVal = (

那你就不能轻率地将

%

改成

$

。

print Dumper(\%P4site::regVal);

foreach my $branches (sort keys %P4site::regVal)
{
    print "$branches is bracnhes\n";
}