Topic: Array Calculation Question
I have two arrays that each contain values from a find_by_sql.
@totals is the amount due, which has one value in it.
@payments is an array with 0 or more values.
What I am trying to do is display the total remaining. That is to say the value in @totals minus the sum of the values in @payments.
I can get them to display separately using something like:
<% @payments.each do |payment| %> <%= payment["amount"] %> <% end %>
How can I subtract the sum of all values in @payments from the one value in @totals?
The best I've been able to produce is a memory location...
Last edited by Fienix (2011-09-17 21:01:32)