Not really; the techniques are still relevant in Perl 6 (which you can try out today, no need for waiting), even though the syntax changed slightly. In fact th

Not really; the techniques are still relevant in Perl 6 (which you can try out today, no need for waiting), even though the syntax changed slightly. In fact they are pretty much relevant in all dynamic programming languages that have a convenient closure mechanism/syntax. There's also a "Higher Order Javascript" page somewhere, which translates the Perl examples to javascript. (EDIT: link: http://interglacial.com/hoj/hoj.html http://interglacial.com/hoj/hoj.html)