scoped_guard.hpp

 
#pragma once
 
#include <functional>
 
class ScopeGuard
{
  public:
  template <class Callable> explicit ScopeGuard(Callable&& cleanupFunction)
  try : f(std::forward<Callable>(cleanupFunction))
  {
  }
  catch (...)
  {
    cleanupFunction();
    throw;
  }
 
  ~ScopeGuard()
  {
    if (f)
      f();
  }
 
  void dismiss() noexcept
  {
    f = nullptr;
  }
 
  ScopeGuard(const ScopeGuard&) = delete;
  ScopeGuard(ScopeGuard&& other) noexcept = delete;
  ScopeGuard& operator=(const ScopeGuard&) = delete;
  ScopeGuard& operator=(const ScopeGuard&&) = delete;
 
  private:
  std::function<void()> f;
};