Recursion is another solution to this, especially if you do not know upfront how deep your hashes are nested or if the depth is not the same everywhere:
use strict;
use warnings;
sub loop_over_hash {
my( $keys, $href ) = @_;
print join( ',', @$keys , $href ), "\n" and return unless 'HASH' e
+q ref $href;
loop_over_hash( [ @$keys, $_ ], $href->{$_} ) for keys %$href;
}
my %hash = (
a => {
1 => { x => 5, y => 6 },
2 => { s => 7, t => 8 }
},
b => {
3 => 'end',
},
);
loop_over_hash [], \%hash;
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|