Question

I use the following code to create a public static array in C#

public class A{
    public static array[] obj;
}

I have another class B.
From class B I call
A.ArrayName and I get the array I use in class A.

I wanted to know, what is the equivalent of this in objective C

Answer 1

There is no special syntax for this. You just define a class method to return the static array.

For example:

@implementation A // note this is in the implementation

static NSArray *array;

+ (NSArray *)array
{
  if (!array)
    array = [[NSArray alloc] init];

  return array;
}

@end

Or for messier code, but slightly better performance (a good idea in a tight loop, but usually not worthwhile):

@implementation A

static NSArray *array;

+ (void)initialize // this method is called *once* for every class, before it is used for the first time (not necessarily when the app is first launched)
{
  [super initialize];

  array = [[NSArray alloc] init];
}

+ (NSArray *)array
{
  return array;
}

@end

To access it from class B you just do:[A array]