引用 Perl 散列中的散列键链

我有一个像这样存储数据的哈希值

our %deviceSettings = (
  BB => {
          EUTRA => {
            DL => { CPC => "NORM", PLCI => { CID => 88 }, ULCPc => "NORM" },
            UL => {
                    REFSig  => { DSSHift => 2, GRPHopping => 1, SEQHopping => 1 },
                    SOFFset => 0,
                  },
          },
        },
  ...
);

我可以遍历结构并找到特定的键，比如说CID，并检索其值并将“路径”存储在数组中('BB', 'EUTRA', 'DL', 'PLCI').

我还可以显式设置一个值，如下所示

$deviceSettings_ref->{BB}{EUTRA}{DL}{PLCI}{CID} = 99

但我想知道如何使用发现的路径以编程方式设置值。

您可以使用占位符遍历哈希$hashref:

my $hashref = \%deviceSettings;

$hashref = $hashref->{$_} for qw(BB EUTRA DL PLCI);
$hashref->{CID} = 'My New Path';

use Data::Dump;
dd \%deviceSettings;

Outputs:

{
  BB => {
          EUTRA => {
            DL => { CPC => "NORM", PLCI => { CID => "My New Path" }, ULCPc => "NORM" },
            UL => {
                    REFSig  => { DSSHift => 2, GRPHopping => 1, SEQHopping => 1 },
                    SOFFset => 0,
                  },
          },
        },
}