如何在嵌套数据结构中迭代数组？
我试图用
format=yaml
use YAML qw(Dump Bless Load);
use YAML::LoadURI;
use YAML::Tag;
my $yaml_hash = LoadURI($wiki_url);
my $id = $yaml_hash->{query}->{namespaces}->[0];
print $id;
my $id = $yaml_hash->{query}->{namespaces}-[*]->{id}
---
query:
namespaces:
-
id: -2
case: first-letter
'*': Media
canonical: Media
-
id: -1
case: first-letter
'*': Special
canonical: Special
-
id: 0
case: first-letter
'*':
content:
-
id: 1
case: first-letter
'*': Talk
subpages:
canonical: Talk
-
id: 2
case: first-letter
'*': User
subpages:
canonical: User
-
id: 3
case: first-letter
'*': User talk
subpages:
canonical: User talk
没有找到相关结果
已邀请:
1 个回复
耐钨徒
my @ids = map { $_->{id} } @{$yaml_hash->{query}->{namespaces}} ;my @ids; foreach my $ns ( @{$yaml_hash->{query}->{namespaces}} ){ push @ids, $ns->{id} }和。