public override DateTime?GetInstance(int year)
{
if (dayCache.ContainsKey(year))
{
return(dayCache[year]);
}
var easter = EasterCalculator.CalculateEasterDate(year);
var date = easter.AddDays(daysOffset);
dayCache.Add(year, date);
return(date);
}
public override DateTime?GetInstance(int year)
{
return(dayCache.GetOrAdd(year, () => EasterCalculator.CalculateEasterDate(year).AddDays(daysOffset)));
}