My Second Edition Camel book appears to have no mention of this feature... is it new to Perl 5.6, or just one of those details left out of the Camel? I suppose that the third possibility would be that it is in the Camel and I was too dumb to notice, but let's not talk about that.
It looks pretty darn useful though, as merlyn illustrated... I'm surprised that I've never heard of it before.
Hot Pastrami
Comment on Re: (tye)Re: Uses for an lvalue subroutine
Second camel is 5.002, and yes, it's not in 5.2. Third camel is 5.6, and yes, it was added between 5.5.3 and 5.6, which means I'm not touching it for production code yet. However, 5.6.1 is just around the corner, and I'll finally be able to upgrade (yeay!).