是否可以将数组的引用分配为perl中哈希表的key : value
对中的值?
答案 0 :(得分:23)
是的。使用反斜杠创建对数组的引用:
$hash{key} = \@array;
请注意,这将链接到实际数组,因此如果您执行更改,例如:
$array[0] = "foo";
这也意味着$hash{key}[0]
设置为"foo"
。
如果这不是您想要的,您可以使用匿名数组引用[ ... ]
复制值:
$hash{key} = [ @array ];
此外,您不必通过数组来执行此操作。您可以直接分配:
$hash{key} = [ qw(foo bar baz) ];
详细了解如何在perldoc perlref
中制作参考资料答案 1 :(得分:10)
是。有关访问此类数据结构的一些基本规则,请参阅http://perlmonks.org/?node=References+quick+reference,但要创建它,只需执行以下操作之一:
%hash = ( 'somekey' => \@arrayvalue );
$hash{'somekey'} = \@arrayvalue;
%hash = ( 'somekey' => [ ... ] );
答案 2 :(得分:0)
use Data::Dumper; @name=('5/17',
'5/17','5/17','5/17','5/17','5/17','5/17','5/17'); @status_flags=('U
H L','U C','U H L','U C','U C','U H L','U C', 'U H L');
@ip_address=('192.168.0.11','192.168.0.2','192.168.0.13','192.168.0.0','192.168.0.3','192.168.0.12','192.168.0.4','192.168.0.14'); @dp_id=('0','0','0','0','0','0','0','0');
@ip_prefix_length=('32','32','32','24', '32', '32','32','32');
for ($value=0;$value<=5;$value++) {
$keyvals{'Response'}{'brocade-extension-ip-route'}{'extension-ip-route'}={'name'=>"$name[$value]"};
$keyvals{'Response'}{'brocade-extension-ip-route'}{'extension-ip-route'}={'dp-id'=>"$dp_id[$value]"};
$keyvals{'Response'}{'brocade-extension-ip-route'}{'extension-ip-route'}={'ip-address'=>"$ip_address[$value]"};
$keyvals{'Response'}{'brocade-extension-ip-route'}{'extension-ip-route'}={'ip-prefix-length'=>"$ip_prefix_length[$value]"};
$keyvals{'Response'}{'brocade-extension-ip-route'}{'extension-ip-route'}={'ip-gateway'=>'*'};
}
print Dumper \%keyvals;
Each array value assign into hash value. $var1= {
'Response' => {
'extension-ip-route' => {
'status-flags' => 'U H L '
,
'ip-gateway' => '*',
'name' => '0/2',
'ip-address' => '192.168.20.11',
'dp-id' => '0',
'ip-prefix-length'=>'32'
}
}
};
答案 3 :(得分:-1)
%hash = ( 'somekey' => \@arrayvalue );
$hash{'somekey'} = \@arrayvalue;
It is right. We can assign either hash or hash reference format.