在反斜杠上用红宝石分割双引号字符串

Question

I need to split a string by the backslash, the problem is that when I have something like '\\n' inside de string, it is not recognized. I found that this occurs because the double quoted string interprets the \\n as a new line char.

example

irb(main):109:0> 'testestet\nehcucahu'.split('\\')
=> ["testestet", "nehcucahu"] # <---- this is what I want
irb(main):110:0> "testestet\nehcucahu".split('\\')
=> ["testestet\nehcucahu"]

Can I convert a double quoted string to a single quoted before calling split? Or there is another way achieve the desired behavior?

EDIT

Further work showed me that magento inserts a '\\n' for every line on street, which make a lot more sense. I could split it on this specific situation using .split(/\\n/). the comments below have better information if you need to split at a backslash

Answer 1

您可以先替换换行再拆分吗？

str.gsub(/\\n/,"\\\\n").split(/\\\\/)

Answer 2

This is all about single-quoted versus double-quoted strings.

The string a.street you mentioned in a comment, which I'll call

str = "rua rua urua\nhuhuhucuhch"

contains a newline character at offset 12:

str.index("\n") => 12

and does not contain a backslash:

str.index("\\") #=> nil

so you can't split on a backslash.

If this string had been in single quotes (as is the string in your question):

str = 'rua rua urua\nhuhuhucuhch'
str.split("\\") #=> ["rua rua urua", "nhuhuhucuhch"]`.

That's because str now contains a backslash, followed by an "n" , but no newline:

str.index("\\") #=> 12 
str.index("n")  #=> 13 
str.index("\n") #=> nil