Programmer Group

1. OSSpinLock High-level lock OSSpinLock is called a spinlock, and threads waiting for locks are busy-wait, occupying CPU resources all the time. At present, it is no longer safe, and there may be priority inversion problem. If the thread wait ...

Original: https://pantao.parcmg.com/press/react-native-deep-linking-for-ios-android.htmlCode: https://github.com/pantao/react-native-deep-linking-example We live in an age of all things being shared, and the process of sharing will almost eventually share a link. So, as a developer, the most common problem should include how to quickly open App ...

2009 Multi-University Training Contest Part 7 Supplementary Questions The game was organized by three people. During the game, I felt I didn't give much, so I added a question. And I always feel tired in the end of the game, hoping to change. - Sp ...

No matter how perfect a class design is, there may be some unpredictable situations in the future demand evolution. So how do you extend existing classes? Generally speaking, inheritance and combination are good choices. However, in Objective-C 2.0, category is also provided, which can dynamically add new behaviors to existing classes. Category ...

Swift's Practical Combat Skills From OC to Swift, the difference is quite big. This article records that I went from OC to Swift. OC Turn to some of the problems I encountered in Swift development process, and then write down the problems I encountered. In general, some of the techniques under Swift language are helpful to those in need. Pro ...

Custom filters and labels are written in the python file (.py), so first create a new folder name, and then create a new folder under this folder, the name is generally written template tags, write this name, in order to facilitate the connection with the system, and finally create a new Python file u ...

Preface I've been looking at Python lately, and I also like the flexibility of Python. Today I want to talk about code obfuscation in iOS. Why do I want to do code obfuscation? For the sake of the security of APP, in order to prevent others from cracking our code easily; and to make vest bags, we know that the market demand for vest bags is ver ...

Code Walkthrough: Detailed Use of protobuf in caffe [1] Proto file, take BlobShape in caffe.proto as an example syntax = "proto2"; //Specify the protobuf version, default is v2, other versions: "proto3" package caffe; // Finally generate c + + code: namespace caffe message BlobShape { // ...

Catalog Maximum flow algorithm (EK algorithm) Time complexity O(V*(E^2))   Dinic algorithm Time complexity O((V ^ 2)* E) In the solution of Luogu problem, we can see a very enlightening remark: network flow is good at solving all kinds of required matching. Considering that the topic is matc ...

Start at: My blog cause IOS colleagues said he found a bug in sentry. It was said that the debug file prompt was uploaded successfully because of the bug of 9.0.0, but the website found that there was no upload at all. So I started my upgrade. Investigation and research Because my Sentry is not only used on the server side, but also on the cli ...