For some previous projects I rolled some simple code for generating a random string - used to generate a password reset token for example:
Now I've found that this type of functionality has been in Rails for some time - now as ActiveSupport::SecureRandom and previously as Rails::SecretKeyGenerator.
Ok so that is simple code and probably isn't a problem but the lesson here is: read more, code less, do peer reviews...don't waste a lot of time re-inventing the wheel.
