在 perl 中访问哈希元素的问题 [英] issue accessing elements of hash in perl

问题描述

我有以下哈希:

my %releaseMap = {"rel1.2.3" => {
                                    "supporedPorts" => ["lnx86", "lnppc"],
                                    "branch"        => ["DEV"],
                                },

                  "rel2.4" =>   {
                                    "supporedPorts" => ["lnx86", "lnppc"],
                                    "branch"        => ["DEV"],
                                }
                 };

我想在变量 $rel 中获取值 rel1.2.3 和 rel2.4，我想在 $port 中获取值 lnx86 和 lnppc，我想在 $branch 中获取值 DEV.

I want to get the values rel1.2.3 and rel2.4 in the variable $rel, I want to get the values lnx86 and lnppc in $port and I want to get the value DEV in $branch.

我对 perl 中的 Hash 概念不熟悉，我无法弄清楚如何做到这一点.

I am new to the Hash concept in perl, I am not able to figure out how this can be done.

有人可以帮忙吗?谢谢

推荐答案

假设你真的有

my %releaseMap = ("rel1.2.3" => {
                                    "supporedPorts" => ["lnx86", "lnppc"],
                                    "branch"        => ["DEV"],
                                },

                  "rel2.4" =>   {
                                    "supporedPorts" => ["lnx86", "lnppc"],
                                    "branch"        => ["DEV"],
                                }
                 );

你可以使用

for my $rel_id (keys(%releaseMap)) {
   my $rel = $releaseMap{$rel_id};

   my $ports    = $rel->{supporedPorts};
   my $branches = $rel->{branch};

   say "[$rel_id] ports = @$ports; branches = @$branches";
}

文档:

• perlreftut
• perllol

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