Earnings reported between two dates in the past

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https://www.hahn-tech.com/ans/scan-for-earnings-between-30-and-38-days/

Edit: After getting some more details on this I have the following solution. This solution is to scan for stocks that have already reported earnings between two dates in the past. The solution I linked to in my original answer above only searched for earnings being reported at some future date.

input earningsStart = 20191015;
input earningsEnd = 20191031;
def daysFromStart = DaysFromDate(earningsStart) >= 0;
def daysFromEnd = DaysFromDate(earningsEnd) <= 0;
def targetPeriod = daysFromStart and daysFromEnd;
rec trackEarnings = if targetPeriod and HasEarnings() then 1 else trackEarnings[1];
plot scan = trackEarnings;