public static void Do <T>(this ISpanSequence <T> buffer, ActionOfSpan <T> action)
{
Span <T> flat;
if (buffer.Count < 2)
{
flat = buffer.Flatten();
}
if (buffer.TotalLength < 128)
{
unsafe
{
var stackArray = stackalloc byte[128];
flat = new Span <T>(stackArray, 128);
if (!buffer.TryCopyTo(ref flat, 0))
{
throw new Exception(nameof(buffer) + ".TotalLength returned bad value.");
}
}
}
else
{
flat = buffer.Flatten();
}
action(flat);
}
