Question

I have two arrays:

symbols – smaller array
fetchedSymbolsArray – larger array

How can I check to see if the contents in symbols is also inside of fetchedSymbolsArray?

Lets assume

symbols = ["AAPL", "GOOG", "YHOO"];
fetchedSymbolsArray = ["AAPL", "GOOG", "YHOO", "MSFT"];

I want to check to see for duplicates, and then add any additional elements in fetchedSymbolsArray back into symbols. In this case, MSFT would be added.

Answer 1

try this.

BOOL contentIsInLargerArray = NO;
for (id *object in symbols) {
    if ([fetchedSymbolsArray containsObject:object])
        contentIsInLargerArray = YES;
}
return contentIsInLargerArray;

This uses -(BOOL)containsObject:(id)anObject instead of -[indexObObject:].