ruby: sum corresponding members of two or more arrays

Question

I\'ve got two (or more) arrays with 12 integers in each (corresponding to values for each month). All I want is to add them together so that I\'ve got a single array with su

Answer 1

Here's the transpose version Anurag suggested:

[[1,2,3], [4,5,6]].transpose.map {|x| x.reduce(:+)}

This will work with any number of component arrays. reduce and inject are synonyms, but reduce seems to me to more clearly communicate the code's intent here...