public void ReadSampleTest3()
{
MemoryStream file = new MemoryStream(Resources.t10k_images_idx3_ubyte);
IdxReader reader = new IdxReader(file, compressed: true);
var samples = reader.ReadToEndAsVectors<byte>();
for (int i = 0; i < samples.Length; i++)
Assert.AreEqual(28 * 28, samples[i].Length);
}