Question

目前我有一个类似于：

的csv文件

    1%,    2%,    3%,    4%, 
1m, $1.00, $1.50, $2.75, $3.00
2m, $1.25, $1.10, $2.00, $3.50

我正在尝试检查每个排列的适当金额。大多数情况下，我遇到一个问题，找到一个角度来解决这个问题。我的草率代码如下所示。我99％肯定我会以错误的方式解决这个问题。

CSV.foreach("some.csv") do |row|
@row = row.to_s
  if @row.include?('%')
    percent_char = []
    percent_char.push(@row)
 end
  if @row.include?('m')
    m_char = []
    m_char.push(@row)
  end
end

m_char.each do |m|
percent_char.each do |percent|
puts "Increment m_char #{m} and increment #{percent}" 
#per increment I want to be able to assert the proper dollar amount
#this will assert true no matter what, but would just like to learn how to get here
assert_equals(dollar, dollar)
end
end

我在这里有一个“美元”的占位符，主要是为了说明我想要实现的目标。可能有人有任何想法我应该怎么做？

Answer 1

也许你正在寻找这样的东西？

CSV.foreach('some.csv', headers: true) do |row|
  m_char = nil
  row.each do |percent, dollar|
    if m_char
      # whatever kind of validation you wanted goes here
    else
      m_char = dollar
    end
  end
end

但这只有在您修复CSV文件时才有效。您在第一行中缺少值，因此百分比不对齐。你需要一个额外的逗号：

  ,    1%,    2%,    3%,    4%
1m, $1.00, $1.50, $2.75, $3.00
2m, $1.25, $1.10, $2.00, $3.50

如何在ruby中循环遍历.csv文件的内容并验证其内容？

1 个答案: