storing selected days of the week in an objective-c object?

Is there a particular Objective-C object that could be used to store the selected days of the week?

e.g. SUN, MON, THUR, as a selection for 开发者_C百科example

EDIT: So asking is there a specific single NS object that would do this, as opposed to having to create one's own array to store.

To answer your question directly, no, there's not a class specifically dedicated to storing multiple groups of calendar components.

NSMutableArray with NSDates?