python thread base

A basic concept 1 Parallel and concurrent 1 parallel Do something at the same time, you can do something at the same time without interrupting each other For example, a lane on a highway can have multiple non-intrusive vehicles running at the same timeIt is a concept that at the same time a vehicle may be running on each lane. 2 Concurrent, ...

Posted on Tue, 13 Aug 2019 18:20:22 -0700 by Silverlime

Java implements dynamic arrays of data structures

array Array is a kind of data structure that comes into contact with first when learning programming language. This chapter realizes dynamic array based on Java static array and makes simple complexity analysis. public class Array<E> { private int size; private Object[] data; public Array(int capacity) { size ...

Posted on Tue, 13 Aug 2019 06:37:26 -0700 by zippee

File Transfer - JavaIO Stream

Preface Recently, I found that I am not proficient enough in IO flow, so I spent half a day systematically practicing my hand with a set of lessons in Mou class. The notes and codes are arranged as follows, which is also mixed with my own understan ...

Posted on Tue, 13 Aug 2019 05:08:17 -0700 by richinsc

Java Shallow Cloning and Deep Cloning

Shallow cloning In shallow cloning, if the member variables of the prototype object are value types (basic data types such as int, double, byte, boolean, char), copy the data to the cloned object; if the member variables of the prototype object are reference types (complex data types such as classes, ...

Posted on Mon, 12 Aug 2019 23:21:13 -0700 by polybiosis

Examples of OpenCV Mask

The second parameter of Mat's CopyTo method is a mask. The length and width of the mask must be consistent with the source matrix. If the mask value of a pixel is not zero, it will be copied to the target matrix. When applied to an image, only part of the pixels can be copied by the mask to generate ...

Posted on Mon, 12 Aug 2019 05:25:34 -0700 by SuperCam

Kafka Official Document Notes

Articles Catalogue Overview of Kafka Goal 1: Deploy and use a single node, single Broker Goal 2: Deploy and use single-node multi-Broker Goal 3: Kafka API programming--Producer end development Goal 4: Kafka API programming--Consumer development Goal 5: Kafka API Programming -- Integrating Flume to A ...

Posted on Sun, 11 Aug 2019 22:54:48 -0700 by jsbrown

springboot-jsp jar problem

[Previous Summary] A recent project was built with the springboot+jsp structure, but when publishing a production environment, it was necessary to use maven as a jar package, but the default configuration at the beginning was not successful.The following article is the specific solution process. 1. Project structure Base, abnormal phenomenon ...

Posted on Sat, 10 Aug 2019 21:34:54 -0700 by eddjc

Advanced Programming in Unix Environment Chapter 11: Threads

.... Chapter 10 signal notes have not been written yet, I guess it's still too dish. Many demo effects in the book are totally different from those in the book. It's a bit difficult to add the signal chapter. I'll fill in the code pit in the book and then fill in the tenth chapter notes. * 1 Thread A ty ...

Posted on Sat, 10 Aug 2019 05:34:12 -0700 by peachsnapple

Synchronization strategy for multithreaded programs

Catalog A Preliminary Study on the Use of C++11 Threads Waiting for an event or condition to occur with conditional variables Thread-safe queue adapters A Preliminary Study on the Use of C++11 Threads std::thread #include <thread> There is no danger of Race condition for read-only shared data ...

Posted on Sat, 10 Aug 2019 04:08:00 -0700 by tvance929

Implementation of Android Timing Lock Screen (Alarm Manager Timing Part)

The Story of Newbies Entering the Pit Keyword: Alarm Manager Introduction to Alarm Manager: Reference website: https://www.jianshu.com/p/8a2ce9d02640Reference website: https://www.runoob.com/w3cnote/android-tutorial-alarmmanager.html Recommend this website: https://www.jianshu.com/p/d69a90bc44c0 Understand android Low Power Consumption Mod ...

Posted on Fri, 09 Aug 2019 05:05:13 -0700 by B.Murali Krishna