blocks|key|561878|text|设置$Data::Dumper::Sortkeys+=+1以获取Perl的默认排序顺序。如果要自定义顺序，请将$Data::Dumper::Sortkeys设置为对子例程的引用，该子例程接收对散列的引用作为输入，并按照希望散列键的出现顺序输出对散列键列表的引用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|561879|#+sort+keys
$Data::Dumper::Sortkeys+=+1;
print+Dumper($obj);

#+sort+keys+in+reverse+order+-+use+either+one
$Data::Dumper::Sortkeys+=+sub+{+[reverse+sort+keys+%25{$_[0]}]+};
$Data::Dumper::Sortkeys+=+sub+{+[sort+{$b+cmp+$a}+keys+%25{$_[0]}]+};
print+Dumper($obj);|code-block|syntax|javascript|561880|entityMap^0|2|R|1J|N|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

Set <code>$Data::Dumper::Sortkeys = 1</code> to get Perl's default sort order.
If you want to customize the order, set <code>$Data::Dumper::Sortkeys</code> to a reference to a subroutine that receives a reference to a hash as input, and outputs a reference to the list of the hash's keys in the order you want them to appear.

<pre><code># sort keys
$Data::Dumper::Sortkeys = 1;
print Dumper($obj);

# sort keys in reverse order - use either one
$Data::Dumper::Sortkeys = sub { [reverse sort keys %{$_[0]}] };
$Data::Dumper::Sortkeys = sub { [sort {$b cmp $a} keys %{$_[0]}] };
print Dumper($obj);
</code></pre>

blocks|key|561892|text|从Data::Dumper文档中：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|561893|$Data::Dumper::Sortkeys+or+$OBJ->Sortkeys([NEWVAL])
Can+be+set+to+a+boolean+value+to+control+whether+hash+keys+are+dumped+in+sorted+order.+
A+true+value+will+cause+the+keys+of+all+hashes+to+be+dumped+in+Perl's+default+sort+order.+
Can+also+be+set+to+a+subroutine+reference+which+will+be+called+for+each+hash+that+is+dumped.+
In++this+case+Data::Dumper+will+call+the+subroutine+once+for+each+hash,+passing+it+the+
reference+of+the+hash.+The+purpose+of+the+subroutine+is+to+return+a+reference+to+an+array+of+
the+keys+that+will+be+dumped,+in+the+order+that+they+should+be+dumped.+Using+this+feature,+you+
can+control+both+the+order+of+the+keys,+and+which+keys+are+actually+used.+In+other+words,+this+
subroutine+acts+as+a+filter+by+which+you+can+exclude+certain+keys+from+being+dumped.+Default+is++
0,+which+means+that+hash+keys+are+not+sorted.|code-block|syntax|javascript|561894|entityMap|0|LINK|mutability|MUTABLE|url|http://search.cpan.org/perldoc?Data%253a%253aDumper^0|1|C|1|C|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

From the <a href="http://search.cpan.org/perldoc?Data%3a%3aDumper" rel="nofollow"><code>Data::Dumper</code></a> documentation:

<pre><code>$Data::Dumper::Sortkeys or $OBJ-&gt;Sortkeys([NEWVAL])
Can be set to a boolean value to control whether hash keys are dumped in sorted order. 
A true value will cause the keys of all hashes to be dumped in Perl's default sort order. 
Can also be set to a subroutine reference which will be called for each hash that is dumped. 
In this case Data::Dumper will call the subroutine once for each hash, passing it the 
reference of the hash. The purpose of the subroutine is to return a reference to an array of 
the keys that will be dumped, in the order that they should be dumped. Using this feature, you 
can control both the order of the keys, and which keys are actually used. In other words, this 
subroutine acts as a filter by which you can exclude certain keys from being dumped. Default is 
0, which means that hash keys are not sorted.
</code></pre>

blocks|key|778397|text|您可以将$Data::Dumper::Sortkeys变量设置为真值以获得默认排序：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|778398|use+Data::Dumper;
$Data::Dumper::Sortkeys++=+1;

my+$hashref+=+{
++++bob+=>+'weir',
++++jerry+=>,+'garcia',
++++nested+=>+{one+=>+'two',+three+=>+'four'}};

print+Dumper($hashref),+"\n";|code-block|syntax|javascript|778399|或者在其中放置一个子例程，以便随心所欲地对键进行排序。|778400|entityMap^0|4|N|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

You can set the <code>$Data::Dumper::Sortkeys</code> variable to a true value to get a default sort:

<pre><code>use Data::Dumper;
$Data::Dumper::Sortkeys = 1;

my $hashref = {
 bob =&gt; 'weir',
 jerry =&gt;, 'garcia',
 nested =&gt; {one =&gt; 'two', three =&gt; 'four'}};

print Dumper($hashref), "\n";
</code></pre>

or put a subroutine in there to sort the keys however you want.

blocks|key|561945|text|对ascii和完整数字进行排序：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|561946|$Data::Dumper::Sortkeys+=+sub+{
++no+warnings+'numeric';
++if(join('',keys+%25{$_[0]})=~/\d%2B/)
++{
++++[+sort+{+$a+<=>+$b+}+keys+%25{$_[0]}+]
++}
++else
++{
++++return+[sort(keys+%25{$_[0]})];
++}
};|code-block|syntax|javascript|561947|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

sort ascii and full numeric:

<pre><code>$Data::Dumper::Sortkeys = sub {
 no warnings 'numeric';
 if(join('',keys %{$_[0]})=~/\d+/)
 {
 [ sort { $a &lt;=&gt; $b } keys %{$_[0]} ]
 }
 else
 {
 return [sort(keys %{$_[0]})];
 }
};
</code></pre>

I want to dump the values of my object and hash, but it keeps printing the keys out of order. How can I dump the keys in (recursive) sort-order?

<pre><code>use Data::Dumper;
print Dumper $obj;
</code></pre>

How do you sort the output of Data::Dumper?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想转储我的对象和散列的值，但它总是打乱键的打印顺序。如何以(递归的)排序顺序转储键？use Data::Dumper;print Dumper $obj;

问如何对Data::Dumper的输出进行排序？
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