Question

I gave array of objects

array = [rep_type: "working", time_spend: "325", ....;rep_type: "extra", time_spend: "100", ..... ;...]

I need to calculate sums for particular “rep_typ”s how can I do that?
Ex:
“working” – 500
“extra” – 200

Answer 1

result = Hash.new(0)
a.each { |o|
  result[o.rep_type] += o.time_spend
}