Different between NSData and NSMutableData in iPhone

Question

What is the difference between NSData and NSMutableData?

score 3 · Accepted Answer · answered Mar 16 '13 at 06:10

From the Stack Overflow tag-wikis:

The NSData class is an apple class for holding generic data. Often used when reading/writing from and to files, and the internet.

NSMutableData (and its superclass NSData) provide data objects, object-oriented wrappers for byte buffers.

score 3 · Answer 2 · edited May 04 '13 at 11:24

3

NSData is fixed after creation.

NSMutableData, as the name implies, allows operations that change the contents (appendBytes:, appendData, setData:...).

edited May 04 '13 at 11:24

Danny Beckett

answered Mar 16 '13 at 06:29

DrC

2 Answers2