How to get a constant literal container to work.

gistfile1.m

/*
 Source: WWDC2012 Modern Objective-C talk
 How to get a constant literal container to work.
*/

@implementation MyClass

static NSArray *thePlanets;

+ (void)initialize {
    if (self == [MyClass class]) {
        thePlanets = @[
            @"Mercury", @"Venus", @"Earth",
            @"Mars", @"Jupiter", @"Saturn",
            @"Uranus", @"Neptune"
        ];
    }
}