AppStoryboard.h

typedef enum : NSUInteger {
    AppStoryboardMain = 0,
    AppStoryboardDetail,
} AppStoryboardName;

#define kStoryboardArray @"Main", @"Detail", nil

#define storyboardString(enumVal) [[[NSArray alloc] initWithObjects:kStoryboardArray] objectAtIndex:enumVal]

@interface UIViewController (AppStoryboard)

+ (instancetype)instantiateFromStoryboard:(AppStoryboardName)storyboardName;

@end

AppStoryboard.m

@implementation UIViewController (AppStoryboard)

+ (instancetype)instantiateFromStoryboard:(AppStoryboardName)storyboardName {
    
    NSString *storyboardName = storyboardString(storyboard);

    // Assume ViewController's storyboardID is identical to ViewController's class name.
    NSString *controllerIdentifier = NSStringFromClass([self class]);
        
    return [[UIStoryboard storyboardWithName:storyboardName bundle:nil] instantiateViewControllerWithIdentifier:controllerIdentifier];
}

@end