First, install it:

$ gem install veils

Then, use it like this:

require 'veils'
obj = Veil.new(obj, to_s: 'Hello, world!')

The method to_s will return Hello, world! until some other method is called and the veil is "pierced."

Keep in mind that Veil is thread-safe.

How to contribute

Read these guidelines. Make sure you build is green before you contribute your pull request. You will need to have Ruby 2.3+ and Bundler installed. Then:

$ bundle update
$ bundle exec rake

If it's clean and you don't see any error messages, submit your pull request.