dynamoid

https://github.com/veraticus/dynamoid

Ruby ORM for Amazon's DynamoDB

CohortsService#running_totals

Calculate a running sum of active users, so users active in later months
count as active in this month, too. Start with the most recent month first,
for calculating the running totals, and then reverse for displaying in the
table.

Each month has a total, and a percentage of the overall total, as keys.

Source | Google | Stack overflow

Edit

git clone [email protected]:veraticus/dynamoid.git
cd dynamoid
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-CohortsService-running_totals-for-pr

# Commit to git

git add git commit -m "better docs for CohortsService#running_totals"

# Open pull request

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

hub fork

git push <your name> -your-name--update-docs-CohortsService-running_totals-for-pr

hub pull-request

# Celebrate!