Newbie question working with JSON responses and arrays

Rafa_F · March 27, 2016, 5:36am

Summing a set of values from an API response but getting confused
flipping between hashes and arrays. This feels like it should be really
simple.

All code provided below

gist.github.com

https://gist.github.com/danielpatricio/e08700ffbd23b493e5fe

total_orders.rb

#This is being returned from the API
request =
 {"orders"=> [
  {"total_price"=>"31.46"}, 
  {"total_price"=>"34.95"}, 
  {"total_price"=>"31.46"}, 
  {"total_price"=>"50.95"}, 
  {"total_price"=>"39.57"}, 
  {"total_price"=>"112.37"}
]}

This file has been truncated. show original

dannypotta · March 27, 2016, 9:59am

sum = request[“orders”].reduce(0) do |sum,item|
sum + item[“total_price”].to_r
end
puts sum
puts sum.to_f

I converted the strings representing the prices to Rationals to avoid
rounding errors.