ios - How get the total sum of float from a NSMutableArray

Question

I created a NSMutableArray which contains a lot of NSString and float

DataOrder *addClient = [[DataOrder alloc ] initWithName:[[DataOrder instance]product] pric         


        

Answer 1

Key-Value coding:

NSNumber *sum = [[[ArrayBuying instance] tableau] valueForKeyPath:@"@sum.price"];

gives the sum of the "price" attribute of all the objects in the array.

To make this work with your custom objects, price should be a property of DataOrder.