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Editorial Team
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Asked: 2026-05-14T14:31:00+00:00

I have a NSMutableArray which contains a few NSString objects. How can I test

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I have a NSMutableArray which contains a few NSString objects. How can I test if the array contains a particular string literal?

I tried [array containsObject:@"teststring"] but that doesn’t work.

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1 Answer

  1. Editorial Team

    What you’re doing should work fine. For example

    NSArray *a = [NSArray arrayWithObjects:@"Foo", @"Bar", @"Baz", nil];
NSLog(@"At index %i", [a indexOfObject:@"Bar"]);

    Correctly logs “At index 1” for me. Two possible foibles:

    1. indexOfObject sends isEqual messages to do the comparison – you’ve not replaced this method in a category?
    2. Make sure you’re testing against NSNotFound for failure to locate, and not (say) 0.
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