確認objective c方法參數的指標是assign或copy

//結論：method的參數是assign，也就是不做copy直接傳入指標

//確認參數的指標為copy或assign

    NSMutableArray *array = [@[@1,@2] mutableCopy];

    [concept checkParameterPointer:array];

    NSLog(@"array : %@", array);

+ (void) checkParameterPointer:(NSMutableArray *)array{

    NSMutableArray *a = array;

    NSLog(@"1. a=%@", a);

    [a addObject:@5];

    NSLog(@"2. a=%@", a);

}

//執行結果

2014-05-22 18:15:40.349 ConceptComfirm[47546:60b] viewDidLoad

2014-05-22 18:15:40.362 ConceptComfirm[47546:60b] class : Concepts

2014-05-22 18:15:40.363 ConceptComfirm[47546:60b] 1. a=(

    1,

    2

)

2014-05-22 18:15:40.363 ConceptComfirm[47546:60b] 2. a=(

    1,

    2,

    5

)

2014-05-22 18:15:40.363 ConceptComfirm[47546:60b] array : (

    1,

    2,

    5

)

2014-05-22 18:15:40.389 ConceptComfirm[47546:60b] viewWillAppear

2014-05-22 18:15:40.448 ConceptComfirm[47546:60b] viewDidAppear