CODEWITHSUNDEEP
objective-cnsmutablearraynsarraylogic
Will
Will

Reputation: 147

Remove specific values from NSArray

I have two NSArrays, array1 and array2.

If array1 has values of 7,8,9,10 and array2 has values of 7,9,10; how would I remove only the variables that do not exist within array2.

So array1 would go from 7,8,9,10 - to 7,9,10.

Upvotes: 0

Views: 125

Answers (1)

Marco
Marco

Reputation: 6692

Use the NSMutableSet intersectSet: method to find the intersection of both arrays.

E.g. something like:

NSMutableSet *intersection = [NSMutableSet setWithArray:firstArray];
[intersection intersectSet:[NSSet setWithArray:secondArray]];

NSArray *intersectionArray = [intersection allObjects];

Upvotes: 1

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