/// <summary>
/// Returns the sub bit array from the given <paramref name="bitArray"/> as an <see langword=""="UInt64"/>
/// value. The sub bit array, left or right, is selected by the given <paramref name="getFromLeftBits"/>
/// boolean.
/// </summary>
public static ulong ToUInt64(IReadOnlyDuoBitArray bitArray, bool getFromLeftBits)
{
var byteArray = getFromLeftBits
? bitArray
.GetLeftBits(0, 8 * sizeof(ulong))
.ToByteArray()
: bitArray
.GetRightBits(0, 8 * sizeof(ulong))
.ToByteArray();
return(BitConverter.ToUInt64(byteArray, 0));
}
