为什么relative_require不能在Ruby1.8.6上工作？
为什么relative_require不能在Ruby1.8.6上工作？
提问于 2010-04-21 15:28:18
我正在学习Windows7上的Ruby (使用1.8.6版)。
当我尝试运行下面的stock_stats.rb程序时，我得到以下错误：
C:\Users\Will\Desktop\ruby>ruby stock_stats.rb
stock_stats.rb:1: undefined method `require_relative' for main:Object (NoMethodE
rror)我有三个v.small代码文件：
stock_stats.rb
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}"csv_reader.rb
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 << 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 book_in_stock.rb
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 << 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 提前感谢您的帮助。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/2681031
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