如何从散列哈希中提取密钥名称？ [英] How to extract key name from a hash of hash?

问题描述

 ％HoH =（
 flintstones => {
丈夫=>fred，
 pal =>barney，
}，
 jetsons => {
丈夫=>george，
 $ wife =>jane，
 his boy =>elroy，
}，
 simpsons => {
 husband =>homer， 
 wife =>marge，
 kid =>bart，
}，
  

）;

如何迭代每个内部哈希（比如flintstones），并提取关键字名称（丈夫，朋友）和相应的每个这样的迭代vales？

解决方案

 为我的$ k（键％{$ HoH {flintstones}}）{
 
 my $ v = $ HoH {flintstones} {$ k}; 
 printkey is $ k; value is $ v \\\
; 
} 
  

另一种方法是使用 each
pre $ ..}





I have following hash of hash :

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

);

How to iterate over each inner hash (say flintstones) and also extract the key names (husband, pal) and corresponding vales for each such iteration?

解决方案

for my $k (keys %{ $HoH{flintstones} }) {

  my $v = $HoH{flintstones}{$k};
  print "key is $k; value is $v\n";
}

another way would be using each

while( my($k, $v) = each %{ $HoH{flintstones} }) { ... }

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