IOS... NS_REQUIRES_NIL_TERMINATION, iosnil

IOS... NS_REQUIRES_NIL_TERMINATION, iosnil

The official example is good. Please note it here.

#import <Cocoa/Cocoa.h>@interface NSMutableArray (variadicMethodExample)- (void) appendObjects:(id) firstObject, ...; // This method takes a nil-terminated list of objects.@end@implementation NSMutableArray (variadicMethodExample)- (void) appendObjects:(id) firstObject, ...{id eachObject;va_list argumentList;if (firstObject) // The first argument isn't part of the varargs list,  {                                   // so we'll handle it separately.  [self addObject: firstObject];  va_start(argumentList, firstObject); // Start scanning for arguments after firstObject.  while (eachObject = va_arg(argumentList, id)) // As many times as we can get an argument of type "id"      [self addObject: eachObject]; // that isn't nil, add it to self's contents.  va_end(argumentList);  }}@end

Address: https://developer.apple.com/library/mac/qa/qa1405/_index.html

Most often seen is in UIAlertView.

- (id)initWithTitle:(NSString *)title message:(NSString *)message delegate:(id /*<UIAlertViewDelegate>*/)delegate cancelButtonTitle:(NSString *)cancelButtonTitle otherButtonTitles:(NSString *)otherButtonTitles, ... NS_REQUIRES_NIL_TERMINATION;

What is the difference between ios711 and ios71?

Although the official version of iOS7.1 does not bring us more surprises, the details of this version are still very positive, such as updates to the user interface and improvements to the original functions. Next, we will analyze several notable details for you.
1. added the only new function: CarPlay.
CarPlay is a brand new on-board system released by Apple recently. It allows iPhone connected to cars to be displayed on the on-board screen on a specific interface, it is convenient for drivers to make calls while driving and to access mobile phone information, maps, navigation, Siri, and other applications. Note that this function can be used only after the lighting interface is attached to the vehicle.
　　
2. Improved smoothness that best satisfies old users
　　
In addition to adjusting the operation interface details, the official iOS7.1 version also improves the smoothness of user running on the device, especially for users still using iPhone 4, it can be said that the mobile phone was "saved", and the animation freezing problem in iOS7.0 almost disappeared, and the startup time of most applications was significantly shortened. This indicates that Apple is trying its best to make the system best available on the old mobile phone. Therefore, most people are satisfied with the official release of iOS7.1.
　　
3. Updated Interface Details for Excellence
　　
This version of iOS7.1 changes Apple's iOS system's lack of personalized customization. It has been updated in many user interfaces and can be customized in some places, for example, in the auxiliary settings in iOS7 settings, we can see that iOS7.1 adds the keyboard color switching function, which can switch the previous gray-white background to black-gray.
Of course, there are also many similar user interface updates. For example, if the "deepen" option is added to the background of the Dock bar at the bottom of iOS7.1, You can adjust its transparency to better integrate the Dock bar after changing the wallpaper; the "Answer" and "reject" buttons are also changed from the rounded rectangle to the circle, but if the iPhone has a call in the screen lock status, there is still no independent "reject" button on the interface. I have never understood why Apple does not add the reject button.
　　
Iv. simple and efficient iOS function improvement
The use of features is directly related to the user experience. Although Apple's iOS system has a good reputation before, it still has some features that have been accumulated for a long time. Apple has made these improvements in this iOS7.1 system update. For example, the "Automatic HDR" option is added on the camera page, just like the flash settings, when "automatic HDR" is enabled, the system intelligently determines whether the HDR mode is required based on the current external environment, that is, three consecutive photos are taken to integrate more perfect photos.
　　
5. Be cautious when upgrading fruit powders with jailbreak Control
　　
If you are not a jailbreaking iPhone 4 user, you can consider upgrading your mobile phone to the ios7.1 system. After all, the smoothness of the mobile phone system is very convenient for daily use, users who have escaped from jail should consider it as appropriate. As a major version update after iOS7, Apple has made many improvements and fixed errors in iOS7.1, this also includes vulnerabilities used by the evasi0n7 jailbreak tool. Therefore, users who want to use the jailbreak Tool temporarily stop on iOS7.0.6 and do not update iOS7.1.
　　

In general, iOS7.1, as a major version update, has fixed many bugs, improved many details, and added many new features. In general, iOS7.1 is a more mature system. Due to the large number of bugs fixed in iOS7.1 this time, it may affect later jailbreak. However, if you do not receive the message, you do not have to worry about upgrading it because even if your official version of iOS7.1 cannot be jailbroken, you can still use "Push genuine resources synchronously" to help you get free of charge, and directly upgrade and update local applications.

What is the problem with upgrading iPhone 5 to IOS614?

1. This small software update will not cause any major problems.
2. iOS 6 is now relatively stable. Such updates are generally Bug fixes.
I personally think there is no problem with upgrading...