Perl 5.19.9 was released today, and it includes some exciting new features like subroutine signatures, and postfix dereferencing. The 5.19.X line also includes a number of optimisations that I'd like to discuss briefly, without going into too much detail (I hope). Combined and/or operators in void context The first improvement was added back in 5.19.6, and effects and and or operators in void cont