[英]How to get Perl Data::Dumper to follow references that are hash keys
Data :: Dumper似乎沒有擴展作為哈希鍵的引用,而且我無法弄清楚要進行哪些更改。 這有可能嗎?
示例代碼:
#!/usr/bin/perl
use Data::Dumper;
@array = ('foo', 'bar');
$arf = \@array;
%hash1 = ( 'baz' => $arf );
%hash2 = ( $arf => 'baz' );
print Dumper(@array); print "\n";
print Dumper(%hash1); print "\n";
print Dumper(%hash2);
輸出:
$VAR1 = 'foo';
$VAR2 = 'bar';
$VAR1 = 'baz';
$VAR2 = [
'foo',
'bar'
];
$VAR1 = 'ARRAY(0x8be1b04)';
$VAR2 = 'baz';
但是我想要一些東西來獲得輸出:
$VAR1 = 'foo';
$VAR2 = 'bar';
$VAR1 = 'baz';
$VAR2 = [
'foo',
'bar'
];
$VAR1 = [
'foo',
'bar'
];
$VAR2 = 'baz';
簡單地說,改變
%hash2 = ( $arf => 'baz' );
至
@hash2 = ( $arf => 'baz' );
當然,它不再是哈希,而是數組。
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