RejectedSoftware Forums

I have a case which can be summarized like below:

class C 
{
	bool veryImportantFlag = false;
}

class B
{
	C[] list;
}

class D
{
      A a; 
      B b;

      this ()
      {
         a = new A; 
         b = new B;
         // add some C inside of b 

      }

      void updateLoop()
      {
        //!! set some the veryImportantFlag = true  
        foo(b);
        sleep(1.seconds);
      }

      void foo( B temp )
      {
    	a.Finalize(temp);
      } 
}

class A 
{
	Tuple!(bool, vibe.core.concurrency.Future!(bool)) futureCancelSell;


	void Finalize( B list )
	{
		if ( !futureCancelSell[0] || futureCancelSell[1].ready() ) 
		{
			futureCancelSell[0] = true;
			futureCancelSell[1] = vibe.core.concurrency.async( &CheckPreviousSells, list);
		}
	}
	
	void CheckPreviousSells( B param )
	{
		param.list.filter!(a => a.veryImportantFlag);  
	}

}

Very strange sometimes even the "veryImportantFlag" is true inside "CheckPreviousSells" function

 param.list.filter!(a => a.veryImportantFlag);  

Returns empty list. This problem does not happen if I remove async call and make it a blocking call.

I am curious if this something related with passing the value with reference. Do you guys have any idea why I am habing this problem.

Also not important but whenever I need to make async calls I am needing to hold a Tuple like

Tuple!(bool, vibe.core.concurrency.Future!(bool)) futureCancelSell;

Is there any better solution for this? Can I avoid the boolean somehow?