Question

I have a simple lookup table, which consists of the following structure:

int | string

• given an int, I want to return a string. However I have to use a lookup table as there is no correlation between the int and the string.

What is the most efficient and fastest way to implement this on the iPhone in Objective-C?

E.g.
// However will 200k values take too long to load and take up too much memory?
NSString *value = [lookupTable objectForKey:[NSNumber numberWithInt:key]]

Answer 1

Without knowing how large your strings are, you should almost certainly be looking at coredata for this sort of thing. It’ll work a treat for those sort of numbers and will keep your memory footprint low.

There’s quite a nice coredata tutorial here and of course copious Apple documentation