GCD Principles (part 1)
In the last chapter 'multi-threaded principles', we focus on the concept of thread and its principles for the theoretical concept explanation and summary, today, we...
Read More
Tag: objective-c
What should I pay attention to when using CADisplayLink and NSTimer for iOS?
December 19, 2023
by Miraan Bajwa
No Comments
Usually we use NSTimer or CADisplayLink, if you do not handle directly using the system provided API methods, there may be a strong reference problem...
Read More
Something else about weak
December 19, 2023
by Todd Wright
No Comments
Introduction about weak bottom principle of this article # iOS weak bottom implementation principle (a) and the following several articles have been very clear, you...
Read More
Multithreading in iOS (part 1) — Processes and threads
December 19, 2023
by Kaia Cole-Brown
No Comments
In the interview of iOS, multithreading is often asked, multithreading is also a difficult point, many interviewees usually do not use much, so it is...
Read More
IOS Low-level – What do you know about deadlocks?
December 19, 2023
by Renee Hayre
No Comments
We should never add functions to a queue to perform tasks in a synchronous manner, this is especially important for serial queues that guarantee deadlocks,...
Read More
Core Text Programming guide
December 19, 2023
by Todd Wright
No Comments
Core Text is an advanced, low-level technology for handling font and Text layout. Introduced since Mac OS X V10.5 and iOS 3.2, you can use...
Read More
OC class principle exploration of member variables
December 19, 2023
by Carol Baker
No Comments
In the last article we explored where class attributes, methods, and protocols are stored. Today we'll explore some class member variables 1. In WWDC 2020,...
Read More
IOS – KVC explanation
December 19, 2023
by Wendy Daniels
No Comments
【Lawliet iOS Garden Party 】KVC is so common, do you know its Set/Get process? Let's take a look at it with the Demo
Read More
Cookie synchronization in the iOS browser
December 19, 2023
by Flynn Carpenter
No Comments
This article mainly records how the browser synchronizes the WkWebView with the native cookie in the study of the browser's network blocking. In the WebKit...
Read More
OC underlying principle 19-KVC
December 19, 2023
by Anna Raymond
No Comments
KVC, also known as key-value Coding, is a common technology in iOS development. It is believed that many developers have used KVC. The two main...
Read More
OC Low-level – Deep understanding of blocks
December 19, 2023
by Mrs. Marie Gardner
No Comments
Conclusion: There is an ISA pointer inside the block, which is essentially an OC object that encapsulates the function call and the function call environment....
Read More
The Nature of the Runimte Runtime & Methods
December 19, 2023
by Anne Atkins
No Comments
This is the sixth day of my participation in the August Challenge. For details, see: When to insert in the August Challenge. Let's search ->insert...
Read More
IOS Low-level -objc_msgSend Slow search
December 19, 2023
by Amber Hampton
No Comments
The previous part of objc_msgSend Quick Lookup analyzes the fast lookup process. If the fast lookup fails, you need to go to the __objc_msgSend_uncached slow...
Read More
MethodSwizzing swap pit | damage enemy 1000 and damage self 800
December 19, 2023
by Andrew Sutton
No Comments
MethodSwizzing method swapping is more commonly known as dark magic. However, just like the unique martial arts in wuxia novels, there are also cases where...
Read More
OC Underlying Principles 08- objc_msgSend
December 19, 2023
by Brittany Robinson
No Comments
In the last section we explored objc_msgSend and went to the CacheLookup process through assembly. Now let's look at CacheLookup. CacheLookup NORMAL,_objc_msgSen
Read More
OC Underlying principle 22- Multithreading
December 19, 2023
by Aaryahi Babu
No Comments
A thread is the basic execution unit of a process. All tasks of a process are executed in a thread. If a process wants to...
Read More
OC Underlying Principles 03- Alloc Underlying exploration
December 18, 2023
by Melissa Evans
No Comments
1. What is Clang? Clang is a lightweight compiler for C, C++, and Objective-C. The source code is distributed under the BSD protocol. Clang will...
Read More
[OC low-level] Memory byte alignment
December 18, 2023
by Billy Mason
No Comments
Int = 4 byte, char = 1 byte, int = 4 byte, char = 1 byte, int = 4 byte, char = 5byte But the...
Read More
OC underlying principle 23-GCD analysis
December 18, 2023
by Lucas Shepherd
No Comments
Main queue analysis queues are divided into serial queues and parallel queues serial queues :dispatch_queue_t serial = dispatch_QUEUE_CREATE ("test", DISPATCH_QU
Read More
IOS objc_msgSend Slow search process
December 18, 2023
by 何婉婷
No Comments
Start with a good study, not anxious not impatient. In the previous article, we mainly studied the message sending process of objc_msgSend, mainly in the...
Read More
Do you really judge _objc_msgForward_stret
December 18, 2023
by 吳龍
No Comments
I happened to learn Method Swizzling in August, read about Aspects and JSPatch to do Method replacement processing, and noticed the protagonist of our introduction...
Read More
IOS Low-level exploration – Runtime-objc_msgSend Process analysis – Quick search process
December 18, 2023
by Garrett Marks
No Comments
This is the 7th day of the LLDB challenge. Why do we call methods in LLDB with mask 7? Try this: The mask here becomes...
Read More
OC underlying principle 04- class principle analysis
December 18, 2023
by Madison Cairns-Stevenson
No Comments
LLDB debugging Run demo 1. On the LLDB terminal, run the following command to obtain the instance object address 2: Print memory 3. Get the...
Read More
OC Underlying principles 12- application loading on
December 18, 2023
by Ishaan Vyas
No Comments
Libsystem-1292.120.1 libdispatch-1271.120.2 dyld-852 objC4-818.21 1 Application loading
Read More
[iOS development] KVO + KVC
December 18, 2023
by Jake Pearce
No Comments
KVO KVO is an event notification mechanism provided by Apple. Allows an object to listen for changes to specific properties of another object and to...
Read More
FBKVOController, Facebook’s KVO framework
December 18, 2023
by 嶽靜宜
No Comments
After covering the basic use of KVO and how to customize it in previous posts, this blog will look at facebook's excellent KVO framework, FBKVOController.
Read More
Compile and debug objC4-779.1 source code under the latest macOS 10.15
December 18, 2023
by Samantha Miller
No Comments
After compiling the objc source code, you create a new target to execute your program and run into the source code. Manage security complianceand resource...
Read More
IOS bottom principle 18: OC bottom level test questions share
December 18, 2023
by 徐柏翰
No Comments
This is the seventh day of my participation in the August Challenge. For details of the activity, see: How to call the load and initialize...
Read More
OC underlying principle 13- application under load
December 18, 2023
by Sara Leach
No Comments
In the previous article, we did not analyze the method _dyLD LD_OBJC_notify_register in detail. In this section, we mainly analyze the process. 1
Read More
Object – source
December 18, 2023
by Matthew Harrison
No Comments
A class must have a constructor. The constructor is not visible in the source code of the Object class. The system automatically adds a constructor...
Read More