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POWhy doesn't relative_require work on Ruby 1.8.6?
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  1. POWhy doesn't relative_require work on Ruby 1.8.6?
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    copied!<p>I'm learning Ruby (using version 1.8.6) on Windows 7.</p> <p>When I try to run the <strong>stock_stats.rb</strong> program below, I get the following error:</p> <pre><code>C:\Users\Will\Desktop\ruby&gt;ruby stock_stats.rb stock_stats.rb:1: undefined method `require_relative' for main:Object (NoMethodE rror) </code></pre> <p>I have three v.small code files:</p> <p><strong>stock_stats.rb</strong></p> <pre><code>require_relative 'csv_reader' reader = CsvReader.new ARGV.each do |csv_file_name| STDERR.puts "Processing #{csv_file_name}" reader.read_in_csv_data(csv_file_name) end puts "Total value = #{reader.total_value_in_stock}" </code></pre> <p><strong>csv_reader.rb</strong></p> <pre><code>require 'csv' require_relative 'book_in_stock' class CsvReader def initialize @books_in_stock = [] end def read_in_csv_data(csv_file_name) CSV.foreach(csv_file_name, headers: true) do |row| @books_in_stock &lt;&lt; BookInStock.new(row["ISBN"], row["Amount"]) end end # later we'll see how to use inject to sum a collection def total_value_in_stock sum = 0.0 @books_in_stock.each {|book| sum += book.price} sum end def number_of_each_isbn # ... end end </code></pre> <p><strong>book_in_stock.rb</strong></p> <pre><code>require 'csv' require_relative 'book_in_stock' class CsvReader def initialize @books_in_stock = [] end def read_in_csv_data(csv_file_name) CSV.foreach(csv_file_name, headers: true) do |row| @books_in_stock &lt;&lt; BookInStock.new(row["ISBN"], row["Amount"]) end end # later we'll see how to use inject to sum a collection def total_value_in_stock sum = 0.0 @books_in_stock.each {|book| sum += book.price} sum end def number_of_each_isbn # ... end end </code></pre> <p>Thanks in advance for any help.</p>
 

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