public static IEnumerable <Pair <MarkerRecord> > Intervals(this IEnumerable <MarkerRecord> records, int startMarker, int endMarker)
{
if (startMarker == endMarker)
{
throw new ArgumentException();
}
if (records == null)
{
yield break;
}
MarkerRecord start = null;
foreach (var record in records)
{
if (record.Marker != startMarker && record.Marker != endMarker)
{
continue;
}
if (record.Marker == startMarker)
{
start = record;
}
else if (record.Marker == endMarker && start != null)
{
var interval = new Pair <MarkerRecord>(start, record);
start = null;
yield return(interval);
}
}
}
public static bool TryParse(string line, ulong index, out MarkerRecord markerRecord) => TryParse(line, index, (marker, idx, timestamp) =>
new MarkerRecord(marker, idx, timestamp), out markerRecord);