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Home/ Questions/Q 364
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sysmart
sysmart

sysmart

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sysmart
Asked: December 18, 20202020-12-18T06:52:13+00:00 2020-12-18T06:52:13+00:00

choosing a young or old position

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To select a position that is young in time, use:
bool SelectLastPosition()
{
   datetime time_last = 0;
  
   for (int i=PositionsTotal()-1; i>=0; i--)
      if (iposition.SelectByIndex(i))
         if (iposition.Symbol() == isymbol.Name() && iposition.Magic() == Magic)
            if(iposition.Time()>time_last)
            {
               time_last = iposition.Time();
            }
        
   for (int i=PositionsTotal()-1; i>=0; i--)
      if (iposition.SelectByIndex(i))
         if (iposition.Symbol() == isymbol.Name() && iposition.Magic() == Magic)
            if(iposition.Time()==time_last)
            {
               return(true);
            }
        
   return(false);
}
by the way, look at pliz, what can be improved in it.
i tried to use the same f-y to select the oldest position, just changing the condition to:
if(iposition.Time() but since initially we set the time to zero datetime time_last = 0, then you will not find anything less than this time, i tried to assign the value 999999999999999, but it does not work, which value is better to assign?

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    1. sysmart

      sysmart

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      sysmart
      2020-12-18T06:52:17+00:00Added an answer on December 18, 2020 at 6:52 am

      yeah, no answer, nothing)

      In short, to capture the old position, it turned out like this:

      bool SelectFirstPosition()
      {
         datetime time_first = 32535244799;
        
         for (int i=PositionsTotal()-1; i>=0; i--)
            if (iposition.SelectByIndex(i))
               if (iposition.Symbol() == isymbol.Name() && iposition.Magic() == Magic)
                  if(iposition.Time()for (int i=PositionsTotal()-1; i>=0; i--)
            if (iposition.SelectByIndex(i))
               if (iposition.Symbol() == isymbol.Name() && iposition.Magic() == Magic)
                  if(iposition.Time()==time_first)
                  {
                     return(true);
                  }
              
         return(false);
      }

      that is, i set datetime time_first = 32535244799 – this is the maximum number that corresponds to december 31, 3000-year, time 23: 59:59

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