Question

I am revolving around with a small issue in iPhone while playing around Array and Dictionary. I have and product dictionary with the following data

  name = Product;
    options =     (
                {
            code = code1;
            name = "product AAA";
        },
                {
            code = code1;
            name = "product BBB";
        },
                {
            code = "code2";
            name = "product BBB";
        },
                {
            code = "code3";
            name = "product CCC";
        },
                {
            code = "code3";
            name = "product DDD";
        },
                {
            code = code4;
            name = "product EEE";
        },
                {
            code = code4;
            name = "product FFF";
        }
    );

Also i have an array of matching products

matchingProducts
{
    "product BBB",
    "product CCC",
    "product DDD"
)

Now, all i want to do is i want to remove from products dictionary comparing to matchingProducts array. how can i do it.
Note: I cannot use key to remove objects as per my business rules. I have issue as i have names are repeated but i have to get the final result dictionary as shown below. Is it possible.

   name = Product;
    options =     (
                {
            code = code1;
            name = "product AAA";
        },
                {
            code = code1;
            name = "product BBB";
        },
                {
            code = code4;
            name = "product EEE";
        },
                {
            code = code4;
            name = "product FFF";
        }
    );

Please, reply me back if my question is not clear.

I have fixed the similar issue in java using the below code

for (int j = 0; j < matchingProducts.size(); j++) {
 String product = ((Product) matchingProducts.elementAt(i)).name;

 for (int i = 0; i <Product.size(); i++) {
     String productName = ((Product) Product.elementAt(i)).name;
     if (product.equals(productName)) {
  Product.removeElementAt(i);
  break;
     }
 }
 }

Answer 1

NSMutableDictionary *Product = initialize like you did with Products;
NSMutableDictionary *resultant = [NSMutableDictionary alloc]init]; //this will have your result    
NSArray *keys = [Product allKeys];
for(int i = 0 ; i < [keys count]; i++)
  {
    id temp = [Product objectForKey:keys[i]];

 bool matchFound = NO;
for (int j = 0; j < [matchingProduct count]; j++)
   {
     id temptemp = [matchingProduct objectAtIndex:j] //Assuming matchingProduct is an NSArray or NSMutableArray
     if(temp == temptemp)
       {
           matchFound = YES;
       }
   }

  if(!matchFound)
     [resultant addObject:temp];     

}

// resultant now has what you wanted. Use it.