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  1. #include <iostream>
  2. #include <future>
  3. #include <functional>
  4. #include <deque>
  5.  
  6. int main() {
  7.     std::future<int> f;
  8.     std::deque<std::packaged_task<int()>> m_tasks;
  9.     {
  10.         m_tasks.emplace_back([](){return 3; });
  11.         f = m_tasks.back().get_future();
  12.         auto taskToExecute = std::move(m_tasks.front());
  13.         m_tasks.pop_front();
  14.         taskToExecute();
  15.     }
  16.     std::cout<<f.get()<<std::endl;
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 5320KB
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https://ideone.com/N43yw5
language:
C++14 (gcc 8.3)
created:
1 hour ago
visibility:
public

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