Best practices for context parameter in addObserver (KVO)

Question

I was wondering what you should set the Context pointer in KVO when you are observing a property. I\'m just starting to use KVO and I haven\'t gleaned too much from the doc

Answer 1

I think the better way would be to implement it as apple's doc says:

The address of a uniquely named static variable within your class makes a good context.

static void *PersonAccountBalanceContext = &PersonAccountBalanceContext;
static void *PersonAccountInterestRateContext = &PersonAccountInterestRateContext;

see documentation.