MemoryStorage

A very simple in memory storage utility class.

Installation

Add the gem to your Gemfile

gem 'memory_storage'

Usage

The only requirement to store objects with MemoryStorage is that persistent objects must respond to #id

Examples:

class Item
  attr_accessor :id, :name, :amount

  def initialize(id, name, amount)
    @id = id
    @name = name
    @amount = amount
  end
end

item = Item.new(1, 'Item one', 10)

# saving an object
MemoryStorage.save(item)

# retrieving object by id
MemoryStorage.find(1) #=> <Item @id: 1 @name: 'Item one' @amount: 10>

# retrieving all stored objects
MemoryStorage.all #=> [<Item @id: 1 @name: 'Item one'  @amount: 10>]

Enumerable

MemoryStorage includes Enumerable, so every method defined in Enumerable can be used:

MemoryStorage.save(Item.new(1,'one', 1))
MemoryStorage.save(Item.new(2,'one', 2))
MemoryStorage.save(Item.new(3,'one', 3))

MemoryStorage.inject(0) {|sum, item| sum + item.amount } #=> 6

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

License

See the LICENSE.