Different between NSData and NSMutableData in iPhone

nsdata, nsmutabledata

Solution

From the Stack Overflow tag-wikis:

nsdata

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

nsmutabledata

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

Problem

Original source