This is cool!
Sadly, in most cases where I am doing conditionals, I am using optional hash keys with exists. Unfortunately, these would autovivify under x!!, which is an undesirable side effect. Ifs or ternaries work, but I can't see a way of stopping the autovivification with the "boolean list squash" operator. Can anybody suggest how to solve my variant?
Oh Lord, won’t you burn me a Knoppix CD ?
My friends all rate Windows, I must disagree.
Your powers of persuasion will set them all free,
So oh Lord, won’t you burn me a Knoppix CD ?
(Missquoting Janis Joplin)