Class: BeanSprout::SparseArray

Inherits:

Object

• Object
• BeanSprout::SparseArray

Extended by:

Forwardable

Defined in:

lib/bean_sprout/sparse_array.rb

Instance Method Summary

• #fetch(index) ⇒ Object
• #fetch!(index) ⇒ Object
• #initialize(index_offset = 0) ⇒ SparseArray constructor

  A new instance of SparseArray.

• #store ⇒ Object

Constructor Details

#initialize(index_offset = 0) ⇒ SparseArray

Returns a new instance of SparseArray.

# File 'lib/bean_sprout/sparse_array.rb', line 9

def initialize index_offset = 0
  @entities = {}
  @index = index_offset
end

Instance Method Details

#fetch(index) ⇒ Object

# File 'lib/bean_sprout/sparse_array.rb', line 19

def fetch index
  @entities[index]
end

#fetch!(index) ⇒ Object

# File 'lib/bean_sprout/sparse_array.rb', line 23

def fetch! index
  raise "Unkown index #{index}." unless @entities.has_key? index
  fetch index
end

#store ⇒ Object

# File 'lib/bean_sprout/sparse_array.rb', line 14

def store
  index = next_index
  @entities[index] = yield index
end