Programmer Group

1 Preface First, we need to answer a question: why should we learn to implement the user state protocol stack? From a technical point of view, it is mainly because the user state network protocol stack is more efficient. The second is that the user state protocol stack can be customized. More efficient is mainly aimed at copying the networ ...

Codeforces Gym 103446H. Life is a Game It is easy to note that for each query, all the nodes passing through must form a connected block, and all the edges passing through must be the set of edges containing the connected block in the minimum spanning tree of the original map. My Solution For a query, the simplest solution is to enumerate each ...

The author is an ordinary programmer who can no longer be ordinary. Based on his interest in provenance, he took the time to study and want to realize the floating window voice recognition function of mobile phone, which does not affect his other operations. The voice recognition technology uses Baidu cloud voice sdk, which should not be diffic ...

1. Overview of integer split items 1.1 1 * 2 + 2 * 3 + 3 * 4 + ... + (n - 1) * n = ? Solution:   The split term formula is: (n - 1) * n = [(n - 1) * n * (n + 1) - (n - 2) * (n - 1) * n] / 3 The solution process is shown in the following figure:   1.2 1 * 2 * 3 + 2 * 3 * 4 + 3 * 4 * 5 + ... + (n - 2) * (n - 1) * n = ? Solution:   ...

I've heard of it more than once. There is a FastAPI framework, which can crush flash and catch up with Golang, but it has not been tested. Today, I'm free to test and see the results. I don't know what went wrong, but I was surprised.Before testingIn order to be lazy, I naturally want to find the previous test code from the Internet as a refere ...

Preface The previous blog summarized the contents of CountDownLatch and Cyclic Barrier. The underlying concurrency control of these contents can not be separated from AQS (AbstractQueuedSynchronizer). Personally, there are fewer scenarios in which AQS is directly used to write concurrency tools in your work, and you won't go deep into the ...

Lane Departure Warning development environment Ubuntu 16.04 OpenCV C++ Explanation of lane departure warning concept Lane Departure Warning System is called Lane Department warning system in English. Therefore, Lane Departure Warning System is referred to as LDW system in many models. Its main function is to remind the driver by m ...

catalogue Today's goal: Draw an image and title it Subgraph drawing Some little knowledge grid setting border box set border Polar plot Today's summary Today's goal: Draw an image and title it First, let's draw a very simple figure, for example, draw an image of y = cos x. The code is as follows: %% Add a title to the graphic ( ...

Today, I happened to talk with some students. Let's share itSimpleDateFormat has thread safety problems. After Java 8, thread safe LocalDate, LocalTime, or LocalDateTime can be used, but to be honest, this LocalDate is much more troublesome than SimpleDateFormat.. but you can write a tool class to encapsulate common methods. So it doesn't seem ...

7.3 implementation of hummingbird E200 processor 7.3.1 overall design idea of IFU function Simply decode the retrieved address Simple branch prediction Generate fetched PC Access the ITCM or BIU according to the address of the PC Address determination and ICB bus control module control access to ITCM and BI ...