sonic-pi

https://github.com/sonic-pi-net/sonic-pi

C++

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Hamster::SortedSet#proper_superset?

Returns `true` if this set contains all the items in `other`, plus at least
one item which is not in `other`.

Source | Google | Stack overflow

Edit

git clone [email protected]:sonic-pi-net/sonic-pi.git
cd sonic-pi
open app/server/ruby/vendor/hamster-3.0.0/lib/hamster/sorted_set.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-Hamster--SortedSet-proper_superset--for-pr

# Commit to git
git add app/server/ruby/vendor/hamster-3.0.0/lib/hamster/sorted_set.rbgit commit -m "better docs for Hamster::SortedSet#proper_superset?"

# Open pull request
gem install hub # on a mac you can `brew install hub`
hub fork
git push <your name> -your-name--update-docs-Hamster--SortedSet-proper_superset--for-pr
hub pull-request

# Celebrate!