Is there an easy way in ruby to split an array of hashes into mutiple arrays by common key? -

if have array this:

[{:x=>1, :y=>a, :z=>i}, {:x=>2, :z=>ii}, {:x=>3, :y=>b, :z=>iii}, {:x=>4, :z=>iv}, {:x=>5, :y=>c, :z=>v}] 

is there easy 1 liner arrays each common key this?:

[[1,2,3,4,5], [a, b, c], [i, ii, iii, iv, v]] 

if have variable pointing array:

arr = [{:x=>1, :y=>a, :z=>i}, {:x=>2, :z=>ii}, {:x=>3, :y=>b, :z=>iii}, {:x=>4, :z=>iv}, {:x=>5, :y=>c, :z=>v}] 

then can write this:

%i{x y z}.map { |key| arr.map { |subarr| subarr[key] }.compact }