变量变化
我编写了一些代码来获取用户的输入，然后根据我的需要进行更改。我需要它的改变和未改变的形式，所以我将输入保存到两个变量中。我不明白的是为什么这两个变量都在变化。我尝试了一些额外的 put 行来确定原因是什么，但我无法弄清楚。代码：
puts "Enter the full directory path of the flv files."
folder = gets.chomp
puts "Folder 1: " + folder
path = folder
path.slice!(0..6)
path.gsub!('\\', '/')
path += '/'
puts "Folder: " + folder
puts "Path: " + path
输入：f:\folder\subfolder\another
输出：
Folder 1: f:\folder\subfolder\another
Folder: folder/subfolder/another
Path: folder/subfolder/another/
我想要获取一个目录并为其他进程保留该目录，同时将其转换为 URL 友好的格式。有想法吗？
I wrote some code to get input from a user and then alter it to my needs. I need it in the altered and unaltered form so I am saving the input into two variables. What I don't understand is why it both variables are changing. I tried some extra puts lines to determine what the cause is but I am unable to figure it out. The code:
puts "Enter the full directory path of the flv files."
folder = gets.chomp
puts "Folder 1: " + folder
path = folder
path.slice!(0..6)
path.gsub!('\\', '/')
path += '/'
puts "Folder: " + folder
puts "Path: " + path
With input: f:\folder\subfolder\another
Output:
Folder 1: f:\folder\subfolder\another
Folder: folder/subfolder/another
Path: folder/subfolder/another/
What I'm going for is getting a directory and keeping the directory for other processes, but also transforming it into a URL friendly format. Ideas?
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因此，您的
路径是对与文件夹相同的对象的引用。要解决此问题，请使用
Thus your
pathis a reference to the same object asfolder.To fix this, use
当您执行
b = a时，它会使b指向与a相同的值，因此当您更改a时使用诸如slice!之类的 > 的值，b也将指向更改后的值。为了避免这种情况，请复制该对象：
When you do
b = a, it's makingbpoint at the same value asa, so when you changea's value using something likeslice!,bwill also point to the changed value.To avoid this, duplicate the object instead: