https://github.com/rubocop/rubocop-performance

An extension of RuboCop focused on code performance checks.
https://github.com/rubocop/rubocop-performance

code-formatter hacktoberfest linter rubocop ruby static-code-analysis

Last synced: about 2 months ago
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An extension of RuboCop focused on code performance checks.

• Host: GitHub
• URL: https://github.com/rubocop/rubocop-performance
• Owner: rubocop
• License: mit
• Created: 2018-06-10T12:08:51.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2024-06-15T07:46:34.000Z (3 months ago)
• Last Synced: 2024-06-16T05:33:34.233Z (3 months ago)
• Topics: code-formatter, hacktoberfest, linter, rubocop, ruby, static-code-analysis
• Language: Ruby
• Homepage: https://docs.rubocop.org/rubocop-performance
• Size: 24.6 MB
• Stars: 654
• Watchers: 13
• Forks: 78
• Open Issues: 49
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE.txt

Awesome Lists containing this project

• awesome-ruby - Rubocop Performance - A RuboCop extension focused on code performance checks. (Code Formatting)

README

        
# RuboCop Performance

[![Gem Version](https://badge.fury.io/rb/rubocop-performance.svg)](https://badge.fury.io/rb/rubocop-performance)

[![CI](https://github.com/rubocop/rubocop-performance/actions/workflows/test.yml/badge.svg)](https://github.com/rubocop/rubocop-performance/actions/workflows/test.yml)

[![Discord](https://img.shields.io/badge/chat-on%20discord-7289da.svg?sanitize=true)](https://discord.gg/wJjWvGRDmm)

Performance optimization analysis for your projects, as an extension to [RuboCop](https://github.com/rubocop/rubocop).

## Installation

Just install the `rubocop-performance` gem

```sh

$ gem install rubocop-performance

```

or if you use bundler put this in your `Gemfile`

```ruby

gem 'rubocop-performance', require: false

```

## Usage

You need to tell RuboCop to load the Performance extension. There are three

ways to do this:

### RuboCop configuration file

Put this into your `.rubocop.yml`.

```yaml

require: rubocop-performance

```

Alternatively, use the following array notation when specifying multiple extensions.

```yaml

require:

  - rubocop-other-extension

  - rubocop-performance

```

Now you can run `rubocop` and it will automatically load the RuboCop Performance

cops together with the standard cops.

### Command line

```sh

$ rubocop --require rubocop-performance

```

### Rake task

```ruby

require 'rubocop/rake_task'

RuboCop::RakeTask.new do |task|

  task.requires << 'rubocop-performance'

end

```

## The Cops

All cops are located under

[`lib/rubocop/cop/performance`](lib/rubocop/cop/performance), and contain

examples/documentation.

In your `.rubocop.yml`, you may treat the Performance cops just like any other

cop. For example:

```yaml

Performance/Size:

  Exclude:

    - lib/example.rb

```

## Documentation

You can read a lot more about RuboCop Performance in its [official docs](https://docs.rubocop.org/rubocop-performance/).

## Compatibility

RuboCop Performance complies with the RuboCop core compatibility.

See the [compatibility documentation](https://docs.rubocop.org/rubocop/compatibility.html) for further details.

**Note:** Performance cops are all MRI focused and are highly dependent of the version of MRI you're using.

## Contributing

Checkout the [contribution guidelines](CONTRIBUTING.md).

## License

`rubocop-performance` is MIT licensed. [See the accompanying file](LICENSE.txt) for

the full text.