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Article

Regular tasks of ordinary users in linux

Reference resources: Details of crontab command Mail usag...
15:03 13 February 2020
Article

docker builds a massive real-time log analysis system

Main technology Architecture diagram Detailed construction Server directory Create docker network Build start es Start ...
14:58 13 February 2020
Article

The difference between using $. view() and using find() to get the row number of a datatable row

<table id="checkLossItem"> <thead> <th>Choice</th> <th>Loss item</th> <th>Loss...
14:06 13 February 2020
Article

A simple example of solving ordinary differential equations with python and an example of solving ordinary differential equations with odeint

Background: It consists of two parts, one is ...
14:05 13 February 2020
Article

P3366 minimum spanning tree [template + Kruskal explanation]

The array size of this question is very important Algorit...
13:49 13 February 2020
Article

Hands on deep learning: task01

task01 linear model, softmax and classification model, multi-layer perceptron 1, Realization of linear regression mode...
13:48 13 February 2020
Article

Regular expression: necessary for form validation processing

The common JavaScript regular expressions are collected and sorted out, which is necessary for form validation processin...
13:30 13 February 2020
Article

Async/Await with Decorator for more elegant asynchronous programming

As Async/Await is officially incorporated into ES7 standard, more and more people are using this so-called asynchronous ...
13:14 13 February 2020
Article

Android realizes TCP client, supports reading and writing

In the last chapter 14.Android - using sendMessage threads to communicate with each other We learned how to send data be...
12:26 13 February 2020
Article

Display of epidemic situation map (win the battle of epidemic)

We collect the real-time data released by Tencent through the requests library; because the data we get is in json forma...
11:18 13 February 2020
Article

JavaScript elegant writing and Sao operation

1. Judgment is empty Straightforward writing if(a == undefined) a = []; if(params.success){ params.success(res); } ...
10:55 13 February 2020
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Learning notes of Spring framework -- API interface design related knowledge and specific coding implementation

Recently, we need to design an API server. If we want to standardize the API interface, we have collected some informati...
10:23 13 February 2020
Article

Machine learning KNN algorithm

The simplest algorithm in machine learning There is no da...
9:26 13 February 2020
Article

Algorithm and data structure [Java implementation]: binary search tree

Linked list can easily store data, but the organization of data can only be linear, there can be no hierarchical organiz...
9:19 13 February 2020
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Java learning notes - generics

Reference: Java core technology I. overview Before addi...
7:56 13 February 2020
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[algorithm summary] graph theory / dp dynamic programming summary

Written in a corner of konjaku - Z On February 7, 2020, graph theory and dpdpdp finally come to an end. When I look ba...
6:44 13 February 2020
Article

Linux -- Basic Application Statistics

Article directory 11. Build personal Leanote cloud notebook 12. Building Firekylin personal blog 13. Experience CVM of ...
6:11 13 February 2020
Article

Linux server implements Redis cluster

1, About Redis Redis is a large-scale cache middleware, which is widely used because of its powerful, efficient and conv...
3:35 13 February 2020
Article

Valentine's Day is coming, teach you how to use code to express!

You still have a big red bag of five yuan and twenty cents? ...
2:39 13 February 2020
Article

The minimum number of NO.6 rotation array in "sword finger Offer" Java

The minimum number of NO.6 rotation array in "sword finger Offer" Java Portal: General Catalogue of sword fin...
1:24 13 February 2020
Article

How to use jQuery to select text nodes?

I want to get all the descendent text nodes of an element as a jQuery collection. What's the best way? ...
0:57 13 February 2020
Article

Adore ng trojan in Rootkit

Rootkit is a kind of special malicious software. Its function is to hide the information of itself and specified files, ...
0:15 13 February 2020
Article

Core implementation of kubernetes container state synchronization mechanism

After the Pod is dispatched to a Node in K8s, the subsequent state maintenance information is maintained by the kubelet ...
23:03 12 February 2020
Article

python sandbox escape

Catalog 1. Preparation python has built-in modules for executing system commands: subprocess os commands timeit paltf...
22:38 12 February 2020
Article

Reinforcing the security of common services

Case 2: Reinforcing the security of common services 2.1 Question ...
21:06 12 February 2020
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Kubernetes StatefulSet for stateful service data persistence (automatic creation of PVC)

1. Kubernetes Stateless Service VS Stateful Service 1) Kubernetes Stateless Service Kubernetes stateless service charac...
12:35 12 February 2020
Article

PyQt5: simple video player

This article aims to introduce how to use PyQt5 to make a simple video player ...
12:21 12 February 2020
Article

Question B: binary search tree

Title Description Determine whether two sequences are the same binary search tree sequence input The start number n, (1 ...
11:07 12 February 2020
Article

Request Zuul gateway error

I started the eureka, config, zuul, a microservice, and used postman to test whether the gateway worked. ...
10:54 12 February 2020
Article

Java recursion exercises

1. Receive a folder path from the keyboard and count the size of the folder package demo; import java.io.File; import ja...
10:37 12 February 2020