如何使用gsub替换撇号

Question

I want to replace apostrophe(') in a name with "backslash apostrophe" (\\') . But Unfortunately not getting such a simple thing.

So on irb I tried following

x = "stack's" x.gsub(/[\\']/,"\\'")

Some how it is not working I am getting same result- stack's in place of stack\\'s

Answer 1

尝试这个：

x = "anupam's"; puts x.gsub("'", "\\\\'")

Answer 2

Try this out:

x.gsub(/[']/,"\\\\\'")

Result:

1.9.3p0 :014 > puts x.gsub(/[']/,"\\\\\'")
anupam\'s

Answer 3

Here's a ruby variant for PHPs addslashes method (from http://www.ruby-forum.com/topic/113067#263640 ). This method also escapes \\ in the string, with double \\ :

class String
  def addslashes
    self.gsub(/['"\\\x0]/,'\\\\\0')
  end
end

Which would correctly escape anupam's:

"anupam's".addslashes # => "anupam\\'s"