關於 objective-c pointer ，我們在網路上蒐集到這些相關的討論、資訊與評價

#11. Testing if an arbitrary pointer is a valid Objective-C object

Tagged pointers were introduced in iOS 7 and Mac OS X 10.7 for 64-bit architectures. A tagged pointer is a special pointer with data stored ...

#12. [Objective-C] 程式設計教學：資料型別(Data Types) - 技術文件

指標(Pointer). 指標的用途是在程式中管理記憶體。Objective-C 沿用C 語言的指標，故先前C 指標的概念大抵上可通用。以下是一個實例：.

#13. Google Objective-C Style Guide | styleguide

However, automatic initialization does not occur for many Objective-C pointer types, including object pointers declared with the __unsafe_unretained ...

#14. Selector 是Objective-C 中所有魔法的開始

Objective -C 物件有哪些method，就是這個物件的Class 的virtual table中，有多少selection/C function pointer 的pair，這個特性造就了在Objective-C 中可以做很多神奇 ...

#15. ISA Pointer - Medium

Every Objective-C object hides a data structure whose first member — or instance variable — is the isa pointer. (Most remaining members are defined by the ...

#16. Objective C Tutorial - Objective C Pointers - Java2s

A pointer is a variable whose value is the address of another variable. Syntax. The general form of a pointer variable declaration is: type *var-name;.

#17. Pointer conversions should be restricted to a safe subset

Objective C static code analysis. Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your OBJECTIVE C code.

#18. Where to put the * Asterisk on Objective C Pointer Variables ...

Where to put the * Asterisk on Objective C Pointer Variables [closed]. Just a quick question - what is the difference (if any) between: NSObject* myObj.

#19. Types and Pointers | Objective-C for C++ Programmers, Part 2

An id is a pointer to an Objective-C object. It's the equivalent of a void* in C, in that you can cast any object pointer type to it and ...

#20. Objective-C Pointer - THE MOMENT

Objective -C中，呼叫方法時，參數的傳遞是call by value，也就是複製一份值傳遞進去，網路上的 ... 而要解釋這個概念前不得不先解釋指標（Pointer）。

#21. __attribute__ directives in Objective-C - Twitter Blog

Easy enough to remember is that any function returning a pointer return ... have a pointer (including an Objective-C object) as a parameter.

#22. Double pointer in ObjC function signature importing incorrectly ...

I'm using an Objective-C library that has me provide a callback that takes a double-pointer parameter like this, where only the inner ...

#23. Objective-C (programming language): What is a nil pointer?

In C-like languages. Pointers are used to refer to objects in memory. In some languages, setting a pointer to zero (nil) will cause an error if you try to ...

#24. Objective-C Language Tutorial => IMP (implementation pointer)

Learn Objective-C Language - IMP (implementation pointer) ... IMP is a C type referring to the implementation of a method, also known as an implementation ...

#25. Objective-C - Wikipedia

Objective -C is a general-purpose, object-oriented programming language that adds ... This type stands for "pointer to any object" in Objective-C (See the ...

#26. ［已解决］swift代码出错：Cast of an indirect pointer to an ...

KeychainItemWrapper/KeychainItemWrapper.m:132:63: Cast of an indirect pointer to an Objective-C pointer to 'CFTypeRef *' (aka 'const void ...

#27. iOS cast of Objective-C pointer type 'NSString *' to ... - CSDN博客

bug问题显示：cast of Objective-C pointer type 'NSString *' to C pointer type 'CFStringRef' (aka 'const struct __CFString *') requires a ...

#28. cast of Objective-C pointer type 'NSString *' to C pointer ... - 简书

cast of Objective-C pointer type 'NSString *' to C pointer type 'CFStringRef' (aka 'const struct __CFString *') requires a bridged cast ...

#29. Why we used double and triple pointer in objective-C or C ...

Well, in C at least, double-pointers are commonly used for 2D arrays. The most common 2D array is probably an array of C strings ( char* 's). Double pointers ...

#30. objc-object-pointer - LispWorks

None. Description. The FLI type objc-object-pointer is a pointer type that is used to represent pointers to Objective-C foreign objects. This is ...

#31. cast of Objective-C pointer type 'NSString *' to C - 知乎专栏

bug问题显示： cast of Objective-C pointer type 'NSString *' to C pointer type 'CFStringRef' (aka 'const struct __CFString *') requires a ...

#32. cast of Objective-C pointer type 'NSString *' to C pointer t

cast of Objective-C pointer type 'NSString *' to C pointer type 'CFStringRef' (aka 'const struct __C. 第一步：. cast of Objective-C pointer ...

#33. Pointer Parameters and the Address Operator - O'Reilly Media

I've mentioned several times that your variables referring to Objective-C objects are going to be pointers: NSString* s = @"Hello, world!";.

#34. iOS - 老生常谈内存管理（五）：Tagged Pointer - 掘金

为了节省内存和提高执行效率，苹果在64bit程序中引入了Tagged Pointer技术， ... 以下是苹果在WWDC2013 《Session 404 Advances in Objective-C》中对 ...

#35. Passing a Swift protocol to an Objective-C pointer - Morioh

I'm trying to assign an object that conforms to a Swift protocol to an Objective-C pointer. The following code is a minimal example that compiles and works ...

#36. Why isn't the isa pointer hardwired in Objective-C classes?

It's an implementation detail of the Apple/GNUstep/OpenStep Objective-C runtime. libobjc is the Apple Objective-C runtime, and Cocoa/GNUstep classes like ...

#37. Question Objective-C Incompatible pointer types initializing ...

Objective -C Incompatible pointer types initializing 'XYZShoutingPerson *' with an expression of type 'XYZPerson *'. *. 1533 visibility 0 arrow_circle_up 0 ...

#38. mikeash.com: Friday Q&A 2015-07-31: Tagged Pointer Strings

In Apple's 64-bit Objective-C implementation, object pointers with the least significant bit set to one (which is to say, odd numbers) are ...

#39. Pointer References on Cocoa - Elements Docs

There are essentially three ways in which Objective-C APIs pass objects references. ObjC, Oxygene, C#, Swift. NSObject *obj, obj: NSObject, NSObject obj ...

#40. 测试枚举给出警告: comparison between pointer and integer

objective -c - 测试枚举给出警告: comparison between pointer and integer. 原文 标签 objective-c iphone enums. 我收到此警告: warning: comparison between ...

#41. C / Objective C pointer declaration - Genera Codice

I have a function that expects a parameter of type , but I do not know how to declare and initialize this variable. Can anyone give me any advice on this?

#42. Double pointer to Xamarin.iOS NSMutableArray becomes null ...

iOS which becomes null in Objective C layer. Xamarin.iOS application. NSMutableArray arraySample = new NSMutableArray();?

#43. Wild pointer about C / C ++ / Objective-C - Programmer All

Wild pointer about C / C ++ / Objective-C, Programmer All, ... in the kitchen with a piece of cake (pointer points to the object) to the bedroom The child, ...

#44. Parameter Passing in Objective-C - Ice

Implementing Parameters for Slice Operations in Objective-C · In-parameters and the return value are passed by value or by pointer, depending on the parameter ...

#45. C++ and Objective C – Section 3 - Atomic Object

An introduction to the Objective C Language for C programmers. ... equivalent to the void" type in ANSI C; it can hold a pointer to an object of any type.

#46. Assigning Pointer In Objective C Or C - ADocLib

Assigning Pointer In Objective C Or C. An array in C/C++ or be it in any programming language is a collection of similar data items Initializing ...

#47. Mixing C++ and Obj-C Pointer? - MacOSX and iOS - JUCE ...

Sorry - I feel this was covered, but... I have an Obj-C library. I'm making an Obj-C++ class to wrap it, but it feels like I need two ...

#48. comparison between pointer and integer ('int *' and int) in iOS ...

comparison between pointer and integer ('int *' and int) in iOS objective c - Array Overflow.

#49. Objective-C - 指针(C - Pointers)_学习Objective_c - WIKI教程

使用指针可以更轻松地执行某些Objective-C编程任务，而不使用指针就无法 ... pointer是一个变量，其值是另一个变量的地址，即存储器位置的直接地址。

#50. OCPtr - a Smart Pointer for Objective C - Level of Indirection

Technically a true smart pointer would overload the -> and & operators to behave like raw pointers - but these are not used with Objective-C ...

#51. SOLVED: ObjectiveC fails with pointer being freed was - Unity ...

Hi I am trying to figure out a problem I am having with calling a simple Objective-C method from Unity iPhone Advanced.

#52. Tag: objective-c - The Dangling Pointer - Aaron Douglas

Posts about objective-c written by Aaron Douglas. ... (id)addObserverForName:(NSString *)name object:(id)obj queue:(NSOperationQueue *)queue ...

#53. Doing things in Cocoa with "nil"

You can validly send any message to a "nil" pointer in Objective-C. This is very different to languages like C++ where invoking a method on a " ...

#54. cast of Objective-C pointer type 'NSString *&#39 - OStack

"cast of Objective-C pointer type 'NSString *' to C pointer type 'CFStringRef' (aka 'const struct __CFString *') requires a bridged cast ".

#55. Cast of an Objective-C pointer to 'char *' is disallowed with ARC

Build fails with error /opt/iOSOpenDev/include/substrate.h:168:41: Cast of an Objective-C pointer to 'char *' is disallowed with ARC coming from this line ...

#56. cast dari Objective-C pointer type 'NSString ... - it-swarm-id.com

Saat mengonversi program Objective-C ke Objective-C ARC, saya mendapatkan kesalahan:"cast of Objective-C pointer type 'NSString *' to C pointer type ...

#57. NSNumber 与Tagged Pointer - SegmentFault 思否

GuardMalloc[debug-objc-38327]: Allocations will be placed on 16 byte boundaries. 剩下的3位，可以用于区分不同类型的Tagged Pointer， ...

#58. 关于ios：ARC禁止使用Objective-C指向'SEL'的指针 - 码农家园

Cast of an Objective-C pointer to 'SEL' is disallowed with ARC我正在尝试为iOS中的UITableView实现pull-to-refresh。 除了我无法正确执行刷新操作 ...

#59. objective c - Standard C++

If you want to use C++ most effectively, use it as a statically typed language. C++ is flexible enough that you can (via pointer casts, unions, and #define ...

#60. Unsafe at Any Speed - Big Nerd Ranch

__unsafe_unretained is a “variable lifetime qualifier” which you put before an Objective-C object pointer. It tells the compiler how to ...

#61. Modern Objective-C Exploitation Techniques -.:: Phrack ...

This is typically referred to as the "ISA" pointer. As in: "an NSString 'IS-A' NSObject". When dealing with bugs in Objective-C applications ...

#62. Memory and Pointers in iOS (C and Objective-C) - Eric Miller ...

You use pointers in Objective-C a lot. As an iOS developer, every framework NSObject you create uses a pointer reference.

#63. What is the isa pointer in the object memory structure used for?

Each object is an instance of a class. Inside the Objective-C language, each object has a pointer named isa, which points to the object's class. Each class ...

#64. Practicing with Pointers - Swift Talk

00:06 Today we'll have some fun with Swift's pointer APIs. We generally only have to deal with pointers when working with C libraries, ...

#65. Block pointer to non function type is invalid - 開發99編程知識庫

objective -c - "Block pointer to non function type is invalid" · 显示原文与译文双语对照的内容. 在這裡，我有一個方法來編碼字元串( 不完整)，你會發現我的問題是 ...

#66. ios implicit conversion of an objective-c pointer to 'NSString ...

ios implicit conversion of an objective-c pointer to 'NSString *__autoreleasing *' is disallowed wit_xinxu-dev的博客-程序员信息网. 技术标签： iOS开发.

#67. cast of Objective-C pointer type 'NSString *' to C ... - 程序员资料

第一步：第二步：http://stackoverflow.com/questions/6725558/cast-of-objective-c-pointer-type-nsstring-to-c-pointer-type-cfstringref-aWhen converting an ...

#68. The isa pointer, killed by Apple - resurrected by mulle-objc

What was isa in Objective-C ? Technically all Objective-C objects used to look like this before ObjC 2.0: struct objc_object { struct ...

#69. Detecting objective-C malware through memory forensics

Also, like Objective-C, a wide range of malware samples has abused ... including their name, type, and implementation pointer, its super ...

#70. Chapter 3. Objective-C Objects and Messages - apeth.com

An Instance Reference Is a Pointer. In C, every variable must be declared to be of some type. In an object-based language such as Objective-C ...

#71. Objective C or C Pointer, double asterisk **, Deferencing and ...

Objective C or C Pointer, double asterisk **, Deferencing and NSError**. Variable. As we know, every variable is a memory location and every ...

#72. Objective-C ARC: strong vs retain and weak vs assign

use strong to retain objects - although the keyword retain is synonymous, it's best to use strong instead · use weak if you only want a pointer to the object ...

#73. Objective-C to Swift conversion cheat sheet

In all instances, Objective-C code is shown on the left and the equivalent Swift code on the right. Where necessary I have added small ...

#74. Is *pointer the memory address of the pointer, or ... - Treehouse

A pointer just any variable, has an address (his own memory address) ... Ryan Jin because then I can change the object that the pointer is ...

#75. iOS 内存管理之Tagged Pointer - InfoQ

Tagged Pointer 实质是一个伪指针，对象的指针中存储的数据变成 ... 在源码objc-runtime-new.mm 中有一段注释对Tagged pointer objects 进行了解释， ...

#76. Understanding Reference and Value type - fluffy.es - iOS ...

As using / modifying a pointer directly can be dangerous (C/C++/ObjC has this ability), Swift has isolated direct memory access from us and ...

#77. Issue with pointer code in Objective-C - Whirlpool Forums

Hi, I'm trying to resolve the following error in Objective-C. 'Implicit conversion of an Objective-C pointer to 'NSString *__autoreleasing ...

#78. Objective-c 中nil, Nil, NULL和NSNull的区别 - 51CTO博客

NULL: A null pointer to anything else, is for C-style memory pointers. ( #define NULL ((void *)0) ). NSNull: A class defines a singleton object ...

#79. Unsafe Swift: Using Pointers and Interacting With C

Swift contains almost a dozen pointer types, each with different ... Imported C and Objective-C APIs will give you insights about how Swift ...

#80. Cast of C pointer type 'void *' to Objective-C pointer type ...

Cast of C pointer type 'void *' to Objective-C pointer type 어쩌고저쩌고 에러가 나는 경우. photalks 2012. 8. 27. 16:04. 이전에는 이런 예러가 없었는데 이전 ...

#81. Unsafe pointers Objective C: swift - Reddit

I am writing code to convert Objective C to Swift. I looked at unsafe pointers from various links, but couldn't understand exactly what it is. Could …

#82. Super simple Objective C style smart pointer. - extend

I've been looking into smart pointer libraries (cos C++ is awfully basic and crap at handling tricky memory situations) and they all seem ...

#83. Start of an Objective-C bridge in Go - DEV Community

Tagged with go, cgo, objc, devlog. ... Go will not let you pass a pointer to data that contains another Go pointer into C. This might mean ...

#84. nil / Nil / NULL / NSNull - NSHipster

Objective -C builds on C's representation of nothing by adding nil . nil is an object pointer to nothing. Although semantically distinct from ...

#85. Optional specifier to be used for pointer type method ... - Swiftify

If you check the Swift interface for an Objective-C header file you'll find that Xcode imports Objective-C pointer type parameters and ...

#86. Beginning Objective-C Properties - raywenderlich.com

Properties are an important aspect of working with Objective-C. In this video, you'll learn how to use ...

#87. Maintaining a Swift and Objective-C Hybrid Codebase

In OBJC, every object variable is a pointer and can theoretically be null. Swift makes a clear distinction between variables that can be null ...

#88. How to Dereference an Unsafe Mutable Pointer in Swift

Last updated: Jan 17, 2020 It can be frustrating if you are coming to Swift as an Objective-C developer. Do you ever find yourself thinking: ...

#89. the Python to Objective-C bridge - PyObjC

The module objc is the core of PyObjC and provides the automatic bridging between ... when it encounters a pointer value that cannot be converted to Python, ...

#90. ARC不允许将'int'隐式转换为'NSString * _Nullable'。不兼容的 ...

本文翻译自 jbiser361 查看原文 2018-07-26 211 objective-c 1 2 3 4 5 ... Incompatible integer to pointer conversion assigning to 'NSString * _Nullable' from ...

#91. Objective-C Succinctly: Data Types - Tuts+ Code

Objective -C has two categories of data types. ... Instead of storing an int value, the *pointer variable points to the memory address ...

#92. Realm: Create reactive mobile apps in a fraction of the time

The Realm Objective‑C and Realm Swift APIs are not interoperable and using ... Realm on a given thread, provide an NSError pointer to the error parameter:.

#93. cast of Objective-C pointer type 'NSString *' to C ... - 极客分享

第一步：第二步： http://stackoverflow.com/questions/6725558/cast-of-objective-c-pointer-type-nsstring-to-c-pointer-type-cfstringref-a When ...

#94. '__weak' only applies to Objective-C object or block pointer ...

ERROR: '__weak' only applies to Objective-C object or block pointer types; type here is 'int' A parameter list without.

#95. Objective-C's "null pointer dereferences doesn't crash ...

Null pointer dereferences do crash in Objective-C. Sending messages to nil is generally not nonsense in Objective-C, though. It has well-defined semantics ...

#96. What is Dangling pointer ? | Cocoa Touch Coding

However Objective-C's full power is only unlocked if you make full use of its object-oriented extensions. Before talking about Dangling ...

#97. Interoperability with C | Kotlin

Interoperability with Swift/Objective-C is provided too and ... C null pointer is represented as Kotlin's null , and the pointer type ...

#98. Learn Objective-C Basics and Specifics from Scratch - Apriorit

Objective -C Quick Tutorial for Beginners: Learn Objective-C Basics ... This type is a pointer to an object of any class ( void * in fact).

#99. Objective-C id type - do begin

It's a pointer to struct. Although being a pointer type, it's a pointer that's treated by the Objective C compiler in a very special way. “id” ...