Best way to change "bob@???.???" to "bob@something.com" using Ruby ?

What's the best way of doing this:

mail = "bob@something.com"
mail2 = mail.do_magic
# puts mail2 will return "bob@anotherwebsite.com"

I'm thinking regex of course, but is there another cool way? If not, how should I do it using regexp?

From stackoverflow

• Not sure I completely understand what you're asking, but couldn't you use regex like this?

  irb(main):001:0> email = "bob@example.com"
  => "bob@example.com"
  irb(main):002:0> email.gsub(/@[\w.]+/, '@something.com')
  => "bob@something.com"
  

  Let me know I've missed something or if I'm not understanding the question correctly.

  marcgg : I totally forgot that you could use regex with gsub... I officially lost my mind. Thanks a lot!

  jerhinesmith : Glad I could help! Keep in mind I threw that regex together fairly quickly, so there might be a better expression for doing the replace.

  marcgg : There are tons of validation on the email before getting to this action, so just catching the @ will work just fine, but good point for a future reader ^^

• You can use regexps in strings indexes too:

  email = "bob@example.com"
  replace = "foobar.invalid"
  email[/@.*/] = "@#{replace}"
  

  If you don't want to modify email:

  (new = email.dup)[/@.*/] = "@#{replace}"
  p [email,new]  # => ["bob@example.com", "bob@foobar.invalid"]
  

• Another approach, avoiding regular expressions, is to split and join

  new = [email.split('@').first, "foobar.invalid"].join('@')