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README.md

equalizer

Module to define equality, equivalence and inspection methods

Gem Version Build Status Dependency Status Code Climate

Examples

class GeoLocation
  include Equalizer.new(:latitude, :longitude)

  attr_reader :latitude, :longitude

  def initialize(latitude, longitude)
    @latitude, @longitude = latitude, longitude
  end
end

point_a = GeoLocation.new(1, 2)
point_b = GeoLocation.new(1, 2)
point_c = GeoLocation.new(2, 2)

point_a.inspect    # => "#<GeoLocation latitude=1 longitude=2>"

point_a == point_b           # => true
point_a.hash == point_b.hash # => true
point_a.eql?(point_b)        # => true
point_a.equal?(point_b)      # => false

point_a == point_c           # => false
point_a.hash == point_c.hash # => false
point_a.eql?(point_c)        # => false
point_a.equal?(point_c)      # => false

Supported Ruby Versions

This library aims to support and is tested against the following Ruby implementations:

  • Ruby 2.1
  • Ruby 2.2

If something doesn't work on one of these versions, it's a bug.

This library may inadvertently work (or seem to work) on other Ruby versions or implementations, however support will only be provided for the implementations listed above.

If you would like this library to support another Ruby version or implementation, you may volunteer to be a maintainer. Being a maintainer entails making sure all tests run and pass on that implementation. When something breaks on your implementation, you will be responsible for providing patches in a timely fashion. If critical issues for a particular implementation exist at the time of a major release, support for that Ruby version may be dropped.

Credits

Contributing

See CONTRIBUTING.md for details.

Copyright

Copyright © 2009-2013 Dan Kubb. See LICENSE for details.

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Define equality, equivalency and hash methods automatically

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