How to convert an array of string integers to an array of integers? Ruby

Question

I have an array:

all_ages = ["11", "9", "10", "8", "9"]

and I want to convert it to an array of integers to hopefully make it easier to add them all together. Any help greatly appreciated, looking for level one solutions.

Answer 1

Enumerable#sum can be called with a block telling Ruby how to sum the elements of the array, in this case, to call String#to_i on element first.

all_ages = ["11", "9", "10", "8", "9"]
all_ages.sum(&:to_i)
#=> 47
     

Answer 2

all_ages = ["11", "9", "10", "8", "9"]

Code

p all_ages.map(&:to_i).sum

Or

p all_ages.map { |x| x.to_i }.sum

Output

47