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Create symbolic breakpoints Click the + button in the lower left corner of Xcode Breakpoint Navigator to create different types of breakpoints: Swift Error BreakpointException Breakpoint...Symbolic Breakpoint...OpenGL ES Error BreakpointRuntime Issue BreakpointConstraint Error BreakpointTest Failure Breakpoint Although the above seven br ...

Note that many non-native iOS applications call Face ID in the application to assist login and confirm privacy operations. Here is how to call Face ID or Touch ID. Get user privacy Similar to calling location and camera, first in info Add Face ID permission in plist Privacy - Face ID Usage Description Import header file Import library fil ...

I. overview Several concepts in HTTP network requestSend HTTP request in IOSHTTP request example II. Several concepts in HTTP network request 2.1 URL What is a URL The full name of URL is Uniform Resource LocatorThrough one URL, you can find the only resource on the InternetURL is the address and location of resources. Each resource on t ...

How does GCD work? Included in this article: https://juejin.cn/post/6976878024566243335 1. Serial queue, synchronous operation, no new thread will be created, and the operation will be executed in sequence; Serial queue, asynchronous operation, new thread will be created, and the operation will be carried out in sequence, Usage scenario: op ...

I cache_t structure analysis First, attach a cache_t principle analysis diagram 1.cache_t source code analysis First, take a look at the general structure of cache in the source code struct cache_t { private: explicit_atomic<uintptr_t> _bucketsAndMaybeMask; // 8 union { struct { explicit_atomic<mask_t& ...

In September 2021, Apple released xcode13 and iOS15. Every year, apple requires developers to limit the submission of Xcode versions of market apps. The mobile securities App makes full time preparations to deal with the restrictions in advance. At present, the company's project is adapting in advance, so it is recorded again. 1. Prob ...

Article starting address( Mr Huang xiansen's blog (thatisawesome.club)) Business background Think of a business scenario where the client initiates a task submission request to the Server through the / api/commit interface, and the Server returns a successful Response after receiving the request , in order to obtain the execution progress of ...

Relationship between process and thread A process is an application running in the system. Each process is independent. Each process runs in its dedicated and protected memory space. If a process wants to perform tasks, it must have a thread (each process must have at least one thread, called the main thread). All tasks of a process (progra ...

Author: Wang Zhejian (Zhejian) After a month and a half of technical reconstruction, several months of iteration and volume, the new version of the commodity evaluation list of hand Amoy finally completed the whole process with 100% traffic stability on the double 11 in 2021. We have not only made a clear improvement in business, but also pr ...

preface *** KVO official document link I Share some details about KVO 1.context function First, let's take a look at the description of context addObserver:forKeyPath:options:context: the context pointer in the message contains any data, which will be returned to the observer in the corresponding change notification. You can specify NULL ...