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Re^2: what would you like to see in perl5.12? (trees)

by Arunbear (Parson)
on Aug 10, 2008 at 16:31 UTC ( #703440=note: print w/ replies, xml ) Need Help??


in reply to Re: what would you like to see in perl5.12? (trees)
in thread what would you like to see in perl5.12?

I've added seekable and reversible hash iteration to Tree::RB. Here is an example:

use strict; use warnings; use feature 'say'; use Tree::RB; my $tied = tie(my %capital, 'Tree::RB'); %capital = ( France => 'Paris', England => 'London', Hungary => 'Budapest', Ireland => 'Dublin', Egypt => 'Cairo', Germany => 'Berlin', ); say 'Countries starting from Germany:'; $tied->hseek('Germany'); while(my ($key, $val) = each %capital) { say "key: $key, val: $val"; } say "\nCountries in reverse:"; $tied->hseek({-reverse=> 1}); while(my ($key, $val) = each %capital) { say "key: $key, val: $val"; }
Output:
Countries starting from Germany: key: Germany, val: Berlin key: Hungary, val: Budapest key: Ireland, val: Dublin Countries in reverse: key: Ireland, val: Dublin key: Hungary, val: Budapest key: Germany, val: Berlin key: France, val: Paris key: England, val: London key: Egypt, val: Cairo


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