Re: Play golf on an array of hashrefs

[Joost]

@array = map { exists $_->{mykey} ? $_->{mykey} : () } @array;

Update: this also checks for existence of the key, if you don't need to, go for Abigail's solution.

-- 
Joost       downtime n. The period during which a system
            is error-free and immune from user input.