chef

https://github.com/opscode/chef

Ruby

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Chef::ChefFS::FileSystem.child_pairs

Get entries for children of either a or b, with matching pairs matched up.

==== Returns

An array of child pairs.

    [ [ a_child, b_child ], ... ]

If a child is only in a or only in b, the other child entry will be
retrieved by name (and will most likely be a "nonexistent child").

==== Example

    Chef::ChefFS::FileSystem.child_pairs(a, b).length

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git

cd chef

open lib/chef/chef_fs/file_system.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Chef--ChefFS--FileSystem-child_pairs-for-pr

# Commit to git

git add lib/chef/chef_fs/file_system.rbgit commit -m "better docs for Chef::ChefFS::FileSystem.child_pairs"

# Open pull request

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

hub fork

git push <your name> -your-name--update-docs-Chef--ChefFS--FileSystem-child_pairs-for-pr

hub pull-request

# Celebrate!