假设我有一个像这样的散列哈希：

my %HoH = (
    flintstones => {
        husband   => "fred",pal       => "barney",town      => "springfield"
    },jetsons => {
        husband   => "george",wife      => "jane","his boy" => "elroy",},simpsons => {
        husband   => "homer",wife      => "marge",kid       => "bart",town      => "springfield",);

我想说我想要所有来自斯普林菲尔德的城镇居民.我想在输出中使用相同的哈希哈希,而不需要局外人.

my %HoH = (
    flintstones => {
        husband   => "fred",);

它似乎很傻但无法弄清楚如何过滤结构.目标是在过滤后迭代所有的斯普林菲尔德人.

我当然做了一些研究,我最接近的是哈希切片.
但他们似乎很可怕.