Data structure question, define array at runtime?

[KAL73]

Hi,
I am having trouble with a data structure for an iPhone project. I have an array of Record objects retrieved from an sql database. , each Record hold several strings. On the basis of the value of one of the strings, e.g. 'room', I would like to divide up the array of all the records into new smaller arrays with an array of Records for each unique type of 'room'. I am able to get an array of the unique room types at run time from the sql database with 'select distinct room from myRooms'. I understand how to populate the smaller room specific arrays if I knew the room types in advance, but users can also add new Record objects with custom room types. Is it possible to define an array at run time for each room type, if so how can I do this? Or does anyone have an idea of a different way to accomplish this? I am subdividing the array of all the Record objects so I can present data in a UITableView with a separate section for each type of room.

pseudocode of data structure for three Record objects

name = wrench
date = 3/14/11
room = workroom

name = hammer
date = 3/14/11
room = workroom

name = glass
date = 1/1/11
room = kitchen



then imagine user creates a new record:
name = toy
date = 1/2/11
room = child_room



Thank you in advance for your help.

[Domele]

So each group is an array? Just create a custom object with properties for name, date, and room. Then you can just create the custom object, set it's properties, then add it to an array.