How to initialize an empty mutable array in Objective C

Question

I have a list of objects (trucks) with various attributes that populate a tableview. When you tap them they go to an individual truck page. There is an add button which will add

Answer 1

In modern Objective - C it could be even more shorter:

NSArray *array = @[];

Answer 2

listOfTrucks = [NSMutableArray array]; gives you a new mutable array.

Answer 3

Update:

With new syntax you can use:

NSMutableArray *myArray = [NSMutableArray new];

Original answer:

for example:

NSMutableArray *myArray = [[NSMutableArray alloc] init];

And here you find out why (difference between class and instance method)

Answer 4

Basically, there are three options:

First

NSMutableArray *myMutableArray = [[NSMutableArray alloc] init];

Second

NSMutableArray *myMutableArray = [NSMutableArray new];

Third

NSMutableArray *myMutableArray = [NSMutableArray array];

Answer 5

NSMutableArray *arr = [NSMutableArray array];

Answer 6

NSMutableArray *arr = [NSMutableArray new];