carrierwave

https://github.com/carrierwaveuploader/carrierwave

Ruby

Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks

Mail::IndifferentHash#reverse_merge

Performs the opposite of merge, with the keys and values from the first hash taking precedence over the second.
This overloaded definition prevents returning a regular hash, if reverse_merge is called on a HashWithDifferentAccess.

Source | Google | Stack overflow

Edit

git clone [email protected]:carrierwaveuploader/carrierwave.git

cd carrierwave

open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Mail--IndifferentHash-reverse_merge-for-pr

# Commit to git

git add git commit -m "better docs for Mail::IndifferentHash#reverse_merge"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Mail--IndifferentHash-reverse_merge-for-pr

hub pull-request

# Celebrate!