Edit file File name : atomic_example.rb Content :#!/usr/bin/env ruby #$: << File.expand_path('../../lib', __FILE__) require 'concurrent/atomics' my_atomic = Concurrent::AtomicReference.new(0) my_atomic.update {|v| v + 1} puts "new value: #{my_atomic.value}" begin my_atomic.try_update {|v| v + 1} rescue Concurrent::Atomic::ConcurrentUpdateError => cue # deal with it (retry, propagate, etc) end puts "new value: #{my_atomic.value}" Save