use Table::ParentChild;
use File::Slurp;
my @relationships;
my $i=0;
foreach my $line (read_file("data"))
{
my ($child, $parent)= split ' ',$line;
$relationships[$i++]= [$parent, $child];
}
my $table = new Table::ParentChild( \@relationships );
my $child= 1045316419;
while (my @parents = $table->parent_lookup( $child ))
{
print "Parent of $child is ", $parents[0],"\n";
$child= $parents[0];
}
Table::ParentChild is an XS module that you will need
to build yourself. It is not available from ActiveState
last I checked.
It should work perfectly the first time! - toma
-
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.
|