https://github.com/todesking/ruby-count_by

Enumerable#count_by gem
https://github.com/todesking/ruby-count_by

Last synced: about 1 year ago
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Enumerable#count_by gem

• Host: GitHub
• URL: https://github.com/todesking/ruby-count_by
• Owner: todesking
• License: mit
• Created: 2013-04-07T11:51:46.000Z (about 13 years ago)
• Default Branch: master
• Last Pushed: 2013-09-01T08:04:38.000Z (almost 13 years ago)
• Last Synced: 2025-04-23T04:43:00.187Z (about 1 year ago)
• Language: Ruby
• Size: 172 KB
• Stars: 8
• Watchers: 1
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# count_by

[![Build Status](https://travis-ci.org/todesking/ruby-count_by.png?branch=master)](https://travis-ci.org/todesking/ruby-count_by)

This gem provides `Enumerable#count_by(&block)`, take a block for compute key value and returns `{ key => count_of_key_in_the_collection }`.

## Installation

Add this line to your application's Gemfile:

    gem 'count_by'

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install count_by

## Usage

```ruby

[1, 1, 2, 3, 4, 5].count_by{|x| x % 3}

#=> {1=>3, 2=>2, 0=>1}

enum = [1, 1, 2, 3, 4, 5].count_by

#=> #

enum.each{|x| x % 3}

#=> {1=>3, 2=>2, 0=>1}

```

## Contributing

1. Fork it

2. Create your feature branch (`git checkout -b my-new-feature`)

3. Commit your changes (`git commit -am 'Add some feature'`)

4. Push to the branch (`git push origin my-new-feature`)

5. Create new Pull Request

## Changes

### 1.1.0(Unreleased)

* Call `count_by` without a block returns Enumerator

### 1.0.0

* Initial release