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

Also if you didn't create any property/attribute, you can do like:

NSNumber *sum = [anArray valueForKeyPath:@"@sum.floatValue"];

or

float sum = [[anArray valueForKeyPath:@"@sum.floatValue"] floatValue];

Answer 2

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.

Answer 3

Something like this will work:

float total = 0;
for (DataOrder *client in [[ArrayBuying instance] tableau]) {
    total += client.price;
}

NSLog(@"total = %f", total);

I'm just guessing that your DataOrder class has a price property. Use what you really have.