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Xcode error: unexpected service error: The Xcode build system has crashed. Build again to continue.
Xcode error: unexpected service error: The Xcode build system has crashed. Build again to continue,Xcode error,The Xcode build system has crashed,Build again to continue,
Object-C ScaleToFill、ScaleAspectFit、ScaleAspectFill 区别
ScaleToFill,ScaleAspectFit,ScaleAspectFill,ScaleToFill ScaleAspectFit ScaleAspectFill区别,猿说编程,
Object-C FOUNDATION_EXPORT extern #define区别
FOUNDATION_EXPORT NSString * const NotificationName; // 这是Fundation框架里面的宏 c/c++中不能使用 extern NSString * const NotificationName; // 这是c/c++的关键字,OC/c/c++通用 #defin...
Xcode – Unlock iPhone to Continue,iPhone is locked.
Xcode – Unlock iPhone to Continue,iPhone is locked. 1.断开设备和Mac的连接(拔线) 2.重启Xcode(完全关闭后,再次打开本项目) 3.连接设备和Mac(插线) 4.运行 5.若出现信任设备弹框,选...
Object-C isMemberOfClass
Object-C isMemberOfClass /* 判断对象是否属于某个子类 */ - (BOOL)isMemberOfClass:(Class)aClass; isSubclassOfClass 和 isKindOfClass 作用基本上是一致都是用来判断一个对象或一个类是否为...
Object-C isSubclassOfClass
Object-C isSubclassOfClass /* 判断是否为对象是否为ClassName或其子类的实例 */ - (BOOL)isSubclassOfClass:(Class)aClass;
Object-C isKindOfClass
Object-C isKindOfClass /* 判断是否为对象是否为ClassName或其子类的实例 */ - (BOOL)isKindOfClass:(Class)aClass;