public void Update(long value, string userValue = null)
{
long c = this.count.Increment();
if (c <= this.values.Length)
{
values[(int)c - 1] = new UserValueWrapper(value, userValue);
}
else
{
long r = NextLong(c);
if (r < values.Length)
{
values[(int)r] = new UserValueWrapper(value, userValue);
}
}
}
public Snapshot GetSnapshot(bool resetReservoir = false)
{
var size = this.Size;
if (size == 0)
{
return(new UniformSnapshot(0, Enumerable.Empty <long>()));
}
UserValueWrapper[] values = new UserValueWrapper[size];
Array.Copy(this.values, values, size);
if (resetReservoir)
{
count.SetValue(0L);
}
Array.Sort(values, UserValueWrapper.Comparer);
var minValue = values[0].UserValue;
var maxValue = values[size - 1].UserValue;
return(new UniformSnapshot(this.count.Value, values.Select(v => v.Value), valuesAreSorted: true, minUserValue: minValue, maxUserValue: maxValue));
}