NSMutableData remove bytes?

Question

I can add bytes to a NSMutableData instance easily by using the appendData method, however I do not see any similar method for removing data? Am I overlooking somet

Answer 1

If the data you want to remove is at the end, you can use

[NSMutableDataInstance setLength:[NSMutableDataInstance length] - n];

or with the obj-c 2.0 syntax

NSMutableDataInstance.length -= n;

for anything more complicated than that I'd recommend manipulating the raw data.