What are the Ruby's Object#taint and Object#trust methods?

Question

I was reading about Ruby string methods in the docs and came accross the methods

• taint
• trust
• untaint

Answer 1

I found this link to me informative about tainted Data in ruby.

http://ruby.about.com/od/advancedruby/a/tainted.htm

"Tainted" objects are those that have come from some type of user input. Either from a file, the keyboard or the network, unless the object is a literal in the program or created by the program directly, it will be tainted. The tainted flag is always there on your objects, all you have to do is check it before you do anything unsafe. If you've confirmed that the data is indeed safe, you can then untaint the object.