chef

https://github.com/opscode/chef

Ruby

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

Chef::Mixin::ParamsValidate#_pv_callbacks

List of procs we pass the value to.

All procs must return true for the value to be valid. If any procs do
not return true, the key will be used for the message: `"Property x's
value :y <message>"`.

Source | Google | Stack overflow

Edit

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

cd chef

open lib/chef/mixin/params_validate.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Chef--Mixin--ParamsValidate-_pv_callbacks-for-pr

# Commit to git

git add lib/chef/mixin/params_validate.rbgit commit -m "better docs for Chef::Mixin::ParamsValidate#_pv_callbacks"

# 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--Mixin--ParamsValidate-_pv_callbacks-for-pr

hub pull-request

# Celebrate!