daru

https://github.com/sciruby/daru

Ruby

Data Analysis in RUby

Daru::DataFrame#nest

Return a nested hash using vector names as keys and an array constructed of
hashes with other values. If block provided, is used to provide the
values, with parameters +row+ of dataset, +current+ last hash on
hierarchy and +name+ of the key to include

Source | Google | Stack overflow

Edit

git clone [email protected]:sciruby/daru.git
cd daru
open lib/daru/dataframe.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Daru--DataFrame-nest-for-pr

# Commit to git

git add lib/daru/dataframe.rbgit commit -m "better docs for Daru::DataFrame#nest"

# Open pull request

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

hub fork

git push <your name> -your-name--update-docs-Daru--DataFrame-nest-for-pr

hub pull-request

# Celebrate!