How to get the size of each value of a hash

Question

hi!

I have a hash, each value is an array.

I want to build a new array containing the size of each value/array.

Example:

the hash

{"A"=>["1", "2", "3"], "B"=>["b", "toto"]}

the result

[3, 2]

thanks for your help

Answer 1

I would do:

h.collect{|v|v[1].size}

Answer 2

some_hash.values.map { |v| v.size }

and in 1.9, I believe you can do:

some_hash.values.map(&:size)