Class: LaunchDarkly::MemoizedValue

Inherits:
Object
  • Object
show all
Defined in:
lib/ldclient-rb/memoized_value.rb

Overview

Simple implementation of a thread-safe memoized value whose generator function will never be run more than once, and whose value can be overridden by explicit assignment.

Instance Method Summary collapse

Constructor Details

#initialize(&generator) ⇒ MemoizedValue

Returns a new instance of MemoizedValue.



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# File 'lib/ldclient-rb/memoized_value.rb', line 6

def initialize(&generator)
  @generator = generator
  @mutex = Mutex.new
  @inited = false
  @value = nil
end

Instance Method Details

#get ⇒ Object 



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# File 'lib/ldclient-rb/memoized_value.rb', line 13

def get
  @mutex.synchronize do
    if !@inited
      @value = @generator.call
      @inited = true
    end
  end
  @value
end

#set(value) ⇒ Object 



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# File 'lib/ldclient-rb/memoized_value.rb', line 23

def set(value)
  @mutex.synchronize do
    @value = value
    @inited = true
  end
end