Tag: objective-c

ios

The charm of data structures | iOS@synchronized source code analysis and the magic of one-way linked lists

January 5, 2024

by Janice Walker

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Reading the source code on the one hand can make us realize the principle of some things, but also to see some subtle design. This...

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ios

Common iOS LLDB commands

January 5, 2024

by Onkar Sharma

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1. Print related commands p and Po. The difference between p and Po is that Po only prints the corresponding value, while p returns the...

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ios

Explore the underlying principles of iOS – @Autoreleasepool for memory management

January 5, 2024

by Kenneth Bruce

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Today in the memory management series we continue our exploration of the underlying principles of @Autoreleasepool. So without further ado, let's get started.

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ios

IOS Multithreading (a) | Principles of multithreading with Atomic

January 5, 2024

by John Maldonado

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A thread, also known as a lightweight process, is the smallest unit of a program's execution flow. A standard thread consists of the thread ID,...

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ios

Basic principles of iOS (2) KVO and KVC

January 5, 2024

by Tushar Sunder

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NSKVONotifying_Person overrides the class method inside the derived class and returns the Person type. So the only way to get the actual type is through...

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ios

[iOS features]- iOS development checks whether location and message push permissions are enabled (important)

January 5, 2024

by Keya Bahri

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Import required: code required: code required: Code required: Code required: Code required: Code required: Code required: Code required: Code required: Code required: Code required: Code...

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ios

Runtime underlying principle analysis

January 5, 2024

by 遊信宏

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One is the Legacy Version. One of the early versions of Objective-C 1.0 32-bit Mac OSX was the Modern Version. No implementation Found. Try...

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ios

Loading iOS Classes by hand

January 5, 2024

by Rhys Bruce-Griffin

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The code is compiled into a Mach-O executable, read into the Mach-O executable, and read the class information into memory from mach-O. Map_images is a...

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ios

Loading iOS Classes by hand

January 5, 2024

by Roger Ward

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Ro stands for read only, which contains the name, method, protocol, and instance variable information. Because it is read only, it is WWDC's clean memory,...

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ios

IOS universal multiple styles of popovers (you need popovers have)

January 5, 2024

by 孟雅琪

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# # # DialogTypeNornal/DialogTypeSheet/DialogTypeSelect... Update Cocoapods to the latest version. Add pod 'WMZDialog' to your Podfile. Execute pod Install or POD Update. The import...

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ios

Why iOS development if you can’t even write a custom View

January 5, 2024

by Cheryl Moore

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Introduction: For contact with business development, the development of custom View is the most frequent work. But it turns out that some kids still don't...

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ios

iOS — Autorelease & AutoreleasePool

January 5, 2024

by 範淑玲

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Memory management has always been the focus of Objective-C. In the MRC environment, we delay the release of memory by calling [obj autoRelease]. In the...

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ios

IOS 13 issues resolved and Apple login, dark mode

January 5, 2024

by William Forrest

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KVC can change private attributes to Crash(not all, not all, not all) and need to use another pose instead. Such as [textField setValue: color forKeyPath:...

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ios

Hand rip iOS bottom 5 — Malloc analysis

January 5, 2024

by 胡欣怡

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Above is the source code of objC-781, grafted onto another piece of code below by a call from above. Go to libmalloc source code, continue...

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ios

YYMode use and source code exploration

January 5, 2024

by Sarah Barrett

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Note that when defining a model of another type, such as the history added below, the dictionary attribute for this field is used. Parse into...

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ios

Exploring the underlying principles of iOS — Weak reference tables for memory management

January 5, 2024

by Badal Kashyap

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Following on from the previous article, we moved on to the OC Memory management series on the flow of weak reference tables. Following on from...

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ios

Hand rip iOS bottom 15 – method slow search

January 5, 2024

by Judith Bennett

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TailCallFunctionPointer also simply executes the IMP passed in by the BR instruction. That completes the assembly part, and today we're going to delve deeper into...

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ios

Block is simple

January 5, 2024

by Barbara Gonzalez

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Block in a nutshell, sort out details about blocks that you didn't already know; Block in a nutshell, sort out details about blocks that you...

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ios

OC Common summary of three basic classes

January 5, 2024

by Sumer Bandi

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String initialization defines the ability in a String to convert a C String to an OC String and format other types to an OC String....

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ios

What is it like to create a serial-oc object

January 5, 2024

by Mark Mccoy

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An OC object's journey guide: A beginner iOS developer must be curious about how an OC object is created. Today we will take a brief...

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ios

Retain & Release for iOS

January 4, 2024

by 葉惠如

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The directory is as follows: iOS Underlying principles Exploration alloc iOS underlying principles exploration structure internal alignment iOS underlying principles exploration object nature & ISA...

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ios

IOS Startup Optimization (I) : Related Concepts & Optimization solutions

January 4, 2024

by Mrs. Amy Ford

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This paper will start with a simple exploration of APP startup optimization, and first introduce the basic concepts related to startup. In the physical memory...

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ios

Illustrates isKindOfClass and isMemberOfClass methods

January 4, 2024

by 孫飛

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We often use isKindOfClass in development to determine if an obJ is of a type. Looking at the objC4 source code, we can see that...

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ios

IOS multithreading | view GCD fence function from Swift

January 4, 2024

by Taran Lata

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Preface Recently in Swift want to use the fence function, the result made difficult, how to call write out, is also a little check to...

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ios

Exploration of basic principles of iOS — Memory management of memory five areas

January 4, 2024

by Todd Payne

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How the system memory is divided in iOS development, and how the system optimizes object types. This article begins with an exploration of iOS memory...

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ios

In-depth understanding of GCD’s Dispatch_queue

January 4, 2024

by 黃怡安

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GCD queue is the technical point we often contact in the use of GCD, analysis of dispatch_queue part of the source can better understand the...

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ios

YYModel source code analysis: dictionary to model

January 4, 2024

by Tiffany Blake

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This article takes a simple example, look at YYModel dictionary to model source code there is such a model to create the general process is...

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ios

Note 1: About Tagged Pointer

January 4, 2024

by Charles Brown

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Starting from 64bits, iOS introduces Tagged Pointer technology to optimize storage of small objects such as NSNumber, NSString, and NSDate. Before the introduction of Tagged...

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ios

In-depth understanding of GCD dispatch_semaphore

January 4, 2024

by Nitara Kalla

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Dispath_group is implemented around dispatch_semaphore. So let's go to dispatch_semaphore source code to learn. Using dispatc... in GCD

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ios

Tagged Pointer Format Changes for memory management

January 4, 2024

by Mark Mccoy

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We have 64 bits and we're not really using all of those bits; We only use the middle bits in a real object pointer; Due...

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