Question

我正在尝试序列化哈希哈希值，然后反序列化它以获取哈希的原始哈希值。问题是每当我反序列化它时..会附加一个自动生成的$ var1例如。

原始哈希

%hash=(flintstones => {
    husband   => "fred",
    pal       => "barney",
},
jetsons => {
    husband   => "george",
    wife      => "jane",
    "his boy" => "elroy",  
},
);

出来了 $ VAR1 = { 'simpsons'=＆gt; { 'kid'=＆gt; “巴特”， '妻子'=＆gt; “玛吉”， '丈夫'=＆gt; “本垒打” }， 'flintstones'=＆gt; { '丈夫'=＆gt; “弗雷德”， 'pal'=＆gt; “巴尼” }， };

有没有什么方法可以得到没有$ var1的哈希的原始哈希值？??

Answer 1

你已经证明Storable工作得非常好。 $VAR1是Data :: Dumper序列化的一部分。

use Storable     qw( freeze thaw );
use Data::Dumper qw( Dumper );

my %hash1 = (
   flintstones => {
      husband  => "fred",
      pal      => "barney",
   },
   jetsons => {
      husband  => "george",
      wife     => "jane",
     "his boy" => "elroy",  
   },
);

my %hash2 = %{thaw(freeze(\%hash1))};

print(Dumper(\%hash1));
print(Dumper(\%hash2));

如您所见，原件和副本都是相同的：

$VAR1 = {
          'jetsons' => {
                         'his boy' => 'elroy',
                         'wife' => 'jane',
                         'husband' => 'george'
                       },
          'flintstones' => {
                             'husband' => 'fred',
                             'pal' => 'barney'
                           }
        };
$VAR1 = {
          'jetsons' => {
                         'his boy' => 'elroy',
                         'wife' => 'jane',
                         'husband' => 'george'
                       },
          'flintstones' => {
                             'husband' => 'fred',
                             'pal' => 'barney'
                           }
        };

Answer 2

如果将$Data::Dumper::Terse设置为1，则Data :: Dumper将尝试跳过这些变量名称（但eval有时可能无法解析结果）。

use Data::Dumper;
$Data::Dumper::Terse = 1;
print Dumper \%hash;

现在变成：

{
  'jetsons' => {
                 'his boy' => 'elroy',
                 'wife' => 'jane',
                 'husband' => 'george'
               },
  'flintstones' => {
                     'husband' => 'fred',
                     'pal' => 'barney'
                   }
}

像JSON或YAML之类的内容可能会更适合您的目的吗？

Perl序列化和反序列化哈希的散列

2 个答案: