“cannot form weak reference to instance” 错误信息解释 “cannot form weak reference to instance” 是一个在编程中遇到的错误信息,通常出现在尝试对某个对象实例创建弱引用时。弱引用(Weak Reference)是一种不阻止其引用的对象被垃圾回收器回收的引用类型。当对象没有其他强引用时,垃圾回收器可
解决的办法:在Build Settings--->Aplle LLVM8.0 - Language - Objectibe-C--->Weak Reference In Manual Retain Release 设置为YES。
解决的办法:在Build Settings--->Aplle LLVM8.0 - Language - Objectibe-C--->Weak Reference In Manual Retain Release 设置为YES。
The simplest solution would be to go remove slots=True everywhere, since it's kind of a vague premature optimization in the first place... njsmithadded a commit that references this issue on Oct 1, 2017 Support taking weakrefs to public classes that use slots... 797a38c njsmithmentioned ...
cannot form weak reference to instance of class NSTextView weak reference可以有效的将不再使用的对象置为nil,避免异常行为发生。但是对于重载了retain/release的类,就不能使用weak属性。在Cocoa中,诸如 NSTextView, NSWindow等都属于此种情况。不过即使不小心使用了weak也没有关系,因为系统会提示如题的错误,——...
Trouble inserting into sql database Hey there im currently try to create a page where I can insert some information into my SQL database, this is the php When I hit the submit button I get the following error, Object not found! The requ......
"__weak" means one or both of two things: 1. An unowned reference (i.e. not representing a retain count). 2. A zeroing reference (i.e. that the runtime zeroes when the referenced object is deallocated). #1 doesn't apply to MRR, because you just don't retain the variable anyway....
__weak 这个属性修饰符不能再MRC文件中被引用。 解决方案: Set Build Settings -> Apple LLVM 8.0 - Language - Objective C -> Weak References in Manual Retain Release to YES. 参考stackoverflow: http://stackoverflow.com/questions/36147625/xcode-7-3-cannot-create-weak-reference-in-file-using-manua...
Cannot create __weak reference in file using manual reference counting 所在文件: NSObject+RACPropertySubscribing.h RACKVOChannel.h 解决办法: Build Settings -> Apple LLVM 8.1 - Language - Objective C -> Weak Referances in Manual Retain Release -> Yes...
Xcode更新到7.3后会出现NSObject+MJProperty.h报Cannot create __weak reference in file using manual reference counting错误信息。 解决的办法:在Build Settings--->Aplle LLVM7.1 - Language - Objectibe-C--->Weak Reference In Manual Retain Release设置为YES。