MidiFile.GetTrackChunks() VS Chunks.OfType<TrackChunk>()

[Jenix-Park]

What is the difference between MidiFile.GetTrackChunks() and MidiFile.Chunks.OfType()?
Is there any performance difference?

[melanchall]

Those two things are absolutely the same, there is no any difference in performance. MidiFile.GetTrackChunks() is just a shortcut for MidiFile.Chunks.OfType<TrackChunk>().

[Jenix-Park]

Oh, I see.

Then does the same apply to the following too?

1)
using (var notesManager = trackChunk.ManageNotes())
	foreach (var notes in notesManager.Objects) { }

2)
foreach (var notes in trackChunk.Events.OfType<Note>()) { }

3)
using (var notesManager = new TimedObjectsManager<Note>(trackChunk.Events))
	foreach (var notes in notesManager.Objects) { }

[melanchall]

1 and 3 are the same things. 2 is wrong at all. trackChunk.Events returns EventsCollection which holds collection of MidiEvent, which cannot be casted to Note. The library has full API documentation, please see here about Events property.

[Jenix-Park]

Oops..
I read them all when I first used your great DryWetMIDI plugin,
but it's a very long time ago, so I forgot many things and couldn't even fully understand what I wrote before. lol
The number two was in fact 'var setTempoEvent in trackChunk.Events.OfType()', and I thought it would work with Note too.
Thank you, as always :)