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Custom named thread pool
Let's take a look at the DefaultThreadFactory used by java.util.concurrent.Executors in JDK1.6: /** * The default thread factory */ static class ...
What's a Facade? I hope it's useful for PHPer
What is the Facade? At present, it is a class that is used to facilitate the static method call of the original class (undefined static method).The sp...
Comparison of java replication methods
1. Background In the actual programming process, we often encounter this situation: there is an object A, at A certain time A already contains some va...
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Spring Security and Spring Session
Extend JSON-based login The client and server timed out and authentication failed due to prolonged interaction on the server.However, the user does no...
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Group decision SDUT discrete mathematics OJ4171
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Linux Account and Rights Management
Linux/Centos7 Account and Rights Management Manage user accounts, group accounts Query account information Set permissions for files and directories ...
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Q: is the definition of the following program class legal? #include <iostream> using namespace std; class Test { private: const int ci; public:...
FUTURES MODEL | 4. devpressure pressure submodule
The Development Pressure Submodule calculates the development pressure of each cell by searching for the number of neighboring developed cells and wei...
Transfer closure SDUT discrete mathematics OJ4175
Transitive closure Time Limit: 1000 ms Memory Limit: 65536 KiB Submit Statistic Problem Description It is known that there are n cattle, m times of c...
java export excel exceeds 65533 lines
Business background:List export, data export more than 65533 rows Solution: 1. Over 65533 lines, direct system hint: The maximum number of bars suppo...
Song Baohua: A Complete Case of Ftrace
This article is reproduced and the copyright is owned by the author.For commercial reprinting, please contact the author for authorization. For non-co...
[Java] select sort & heap sort
1 select sort 1.1 basic ideas Each time, the smallest (or largest) element is directly selected from the data elements to be sorted and stored at the...
JAVA basic arrangement
HashMap learning -- write a simple HashMap manually for understanding 1. Definition of Node public class Node { public int hash; public Object key; pu...
Comparison between swiper and scroll view (implementation level slider)
The most commonly used way to realize the horizontal sliding of the slider in the applet is through the scroll view. However, the sliding realized th...
python base (16): built-in function
1. lamda anonymous function In order to solve some simple requirements_Designed_sentence function # Calculation n Of n Secondary_ def func(n): return ...
Graph theory algorithm: reachability and path finding of directed graph
Accessibility of Digraphs Using the depth first algorithm of digraph, it solves the problem of single point connectivity, and can determine whether o...
Judgement subgroup SDUT discrete mathematics OJ4172
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Distributed globally unique ID generation method
I. snowflake algorithm twitter's open-source distributed id generation algorithm uses 64 bit long id. 41 bit, time stamp, in milliseconds, 2 ^ 4...
Hints for You have new mail in/var/spool/mail/root on Linux
1. Sometimes we operate under the root user and often prompt you after login: You have new mail in/var/spool/mail/root. This prompt is due to reminde...
js object-oriented design pattern inheritance
//Class inheritance // function Father(){ // this.fartherValue = true; // } // Father.prototype.getFartherValue = function () { // return this.farthe...
[java] dynamic planning: find the longest common sub column
**Example: * * given two sequences, for example X = ABCBDAB, Y = BDCABA, find the length of their longest common subsequence. Subsequence: in the giv...
Centos Docker Configuration Overview
Coordinates a school in Nanjing. Campus Network Configuration Docker needs to configure a proxy server. From 2 p.m. to 19.38 p.m., make a note to mak...
Signal + slot test case for pyqt5
When writing code with pycharm, it was found that the signal set a slot for connection, but the test found that it did not work. In addition, without...
Correct stopping of multithreading based on Concurrency
Principle introduction Use interrupt to notify instead of force. It's easy to start a thread in JAVA, but when we stop a thread we don't sto...