A small ruby gem exercise. Given a hash with any amount of strings as keys and arrays as values, and a 'x' required amount of items to select, returns an array with a homogeneous selection of x items, mapped by an unique key.
Add this line to your application's Gemfile:
gem 'homogeneous_selection'And then execute:
$ bundle
Or install it yourself as:
$ gem install homogeneous_selection
source = {
"logs": [
{
"url": "example.com",
"token": "345048",
"thumbnail": "example.com",
"title": "Lorem Ipsum"
}
],
"content": [],
"myad": []
}
=> {:logs=>[{:url=>"example.com", :token=>"345048", :thumbnail=>"example.com", :title=>"Lorem Ipsum"}], :content=>[], :myad=>[]}
# Optionally, pass options[:map_key] to map by that key in returned array, by default returns the 'token' property
selection = HomogeneousSelection.new(source)
=> #<HomogeneousSelection:0x0055a0e3b100b0 @source={:logs=>[{:url=>"example.com", :token=>"345048", :thumbnail=>"example.com", :title=>"Lorem Ipsum"}], :content=>[], :myad=>[]}, @options={:unique_key=>:token}>
# Optionally, pass the selection size to this method. Default is 4
selection.get
=> [345048]After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/mlabarca/homogeneous_selection. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
The gem is available as open source under the terms of the MIT License.
Everyone interacting in the HomogeneousSelection project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.