# Liner

Lay a liner for your basic Ruby classes. Basically, it's a solid foundation for a PORO (Plain Old Ruby Object). A Liner is something like a more flexible Struct or a less magical OpenStruct, with enhanced inheritability.

## Usage

You can setup a Liner based class in any of these equivalent ways:

```ruby
Engine = Liner.new(:layout, :fuel)
```
```ruby
class Engine < Liner.new(:layout, :fuel)
end
```
```ruby
class Engine
  liner :layout, :fuel
end
```

It comes with a hash based initializer and a nice inspector.
```ruby
e = Engine.new(layout: 'V8', fuel: "gasoline") # => #<Engine layout="V8", fuel="gasoline">
```

Attribute getters and setters are built in.
```ruby
e.fuel # => "gasoline"
e.fuel = "diesel" # => "diesel"
```

Attributes are accessible via hash-style lookup too.
```ruby
e[:layout] # => "V8"
e[:layout] = "V6" # => "V6"
e[:foo] = "Bar" # => ArgumentError: Invalid liner attribute: 'foo'
```

Equality methods are also availble.
```ruby
e.eql? Engine.new(layout: 'I4') # => false
e == Engine.new(layout: 'V6', fuel: 'diesel') # => true
```

## Installation

Add this line to your application's Gemfile:

    gem 'liner'

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install liner



## 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