Class: OjSerializers::Memo

Inherits:

Object

• Object
• OjSerializers::Memo

Defined in:

lib/oj_serializers/memo.rb

Overview

Internal: Provides a simple API on top of Hash for memoization purposes.

Instance Method Summary

• #clear ⇒ Object

  Internal: Allows to clear the cache when binding the serializer to a different object.

• #fetch(key) ⇒ Object

  Public: Allows to use a simple memoization pattern that also works for falsey values.

• #initialize ⇒ Memo constructor

  A new instance of Memo.

Constructor Details

#initialize ⇒ Memo

Returns a new instance of Memo.

# File 'lib/oj_serializers/memo.rb', line 5

def initialize
  @cache = {}
end

Instance Method Details

#clear ⇒ Object

Internal: Allows to clear the cache when binding the serializer to a different object.

# File 'lib/oj_serializers/memo.rb', line 11

def clear
  @cache.clear
end

#fetch(key) ⇒ Object

Public: Allows to use a simple memoization pattern that also works for falsey values.

# File 'lib/oj_serializers/memo.rb', line 17

def fetch(key)
  @cache.fetch(key) { @cache[key] = yield }
end