Issue related with modifying the value in an NSMutablearray

Question

I am facing an issue with the values in NSMutablearray. I have two NSMutablearray, both are holding the same content using mutablecopy. The issue is that when I modify a value in one array, the corresponding value in the second array also get modified. How to resolove this. Please help me.

show your code please

Andrey Chernukha
– Andrey Chernukha

2013-09-03 09:25:35 +00:00
Commented Sep 3, 2013 at 9:25 — Andrey Chernukha
– Andrey Chernukha, Commented Sep 3, 2013 at 9:25

lykant · Accepted Answer · 2013-09-04 10:54:06Z

1

mutableCopy copies by reference, not value. So, any change to one of those objects affects for both arrays.

You could realize different methods to overcome this situation.

// first method

nameArray2 = [NSMutableArray new];
[nameArray2 addObjectsFromArray:nameArray1];

// second method

nameArray2 = [[NSMutableArray alloc] initWithArray:nameArray1 copyItems:YES];

Best regards.

answered Sep 4, 2013 at 10:54

lykant

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