Extended Explanation of ES6 Object Method

Reading catalogue Object.assign(target, source_1, ···) // Used to copy all enumerable attributes of the source object to the target object Object.is(value1, value2)(object, descriptors) // It is used to compare whether two values are strictly equal, similar to (===). Object.setPrototypeOf(object) // Same as _proto_, the prototype object ...

Posted on Tue, 30 Jul 2019 13:43:24 -0700 by divinequran

Pthon Learning Notes: unittest Unit Test

Unit Testing: Developing code written during self-testing Fundamentals of unittest: The whole platform is built using python's unittest test framework. Here is a brief introduction to the simple application of the unittest module. unittest is python's Standard Test Library and is the most widely used test framework for Python compared to oth ...

Posted on Tue, 30 Jul 2019 12:17:28 -0700 by daredevil88

struts--CRUD optimization (picture upload)

1. Upload Method Upload to the specified file directory, adding a mapping relationship between the server and the real directory to decouple the relationship between the uploaded file and tomcat) File Server 2.web Code Optimization 1 package com.yuan.crud.web; 2 3 import java.io.BufferedInputStream; 4 import java.io.BufferedOut ...

Posted on Tue, 30 Jul 2019 11:50:24 -0700 by FUNKAM35

YurunHttp v3.2.0, new support for WebSocket Client

YurunHttp is an open source PHP HTTP class library that supports chain operation and is easy to use. Supports all common request modes such as GET, POST, PUT, DELETE, UPDATE, upload, download, set and read header s, cookies, request parameters, failed retries, speed limits, proxies, certificates, etc. Version 3.0 perfectly supports the Curl and ...

Posted on Tue, 30 Jul 2019 11:40:31 -0700 by rofl

Java Timing New Posture

For a better reading experience, please visit the original text: PortalForeword: Recently, a big man came to our company and learned a lot from him. One of them is timing. Stop Watch, let's get to know it. The simplest timing In our program, it is necessary to time an operation or method so that we can observe whether the operation or metho ...

Posted on Tue, 30 Jul 2019 10:29:07 -0700 by jbrave

Deployment of Haproxy in Linux (Load Balancing, Dynamic and Static Separation, Read and Write Separation, etc.)

I. Haproxy 1. Introduction to Haproxy Haproxy provides high availability, load balancing and proxy based on TCP and HTTP applications to support virtual hosts. It is a free, fast and reliable solution. Haproxy is especially suited to web sites that are overloaded and often need to be maintained or ...

Posted on Tue, 30 Jul 2019 01:51:55 -0700 by sarakmo

Dubbo Microservice Architecture Using Redis as Registry (SpringBoot)

title: Dubbo micro-service architecture using Redis as registry (SpringBoot) date: 2019-07-30 14:06:29 categories: Framework author: mrzhou tags: SpringBoot redis Dubbo Microservices RPC Preface Dubbo, as a high-performance RPC framework, has been widely used in most front-line IT enterprises. Today we will try it. In order to write as little ...

Posted on Tue, 30 Jul 2019 01:01:36 -0700 by Ironphp

Talking about Spread Tree Splay

General Balanced Tree Description Design a data structure that supports inserting elements, deleting elements, querying the rank of elements with value of val, querying the value with rank of rnk, and querying the precursor and backer of x Solution Get familiar with Splay's basic operations, which in fact work with Treap as well. To impleme ...

Posted on Mon, 29 Jul 2019 10:44:46 -0700 by jrw4

Optimize | Redis AOF rewrite causes good memory problems

I. Problem statement Business received an alarm prompt server memory burst, login check found that there is still a lot of machine memory, suspected to be OOM, check / var/log/messages: kernel: [25918282.632003] Out of memory: Kill process 18665 (redis-server) score 919 or sacrifice child kernel: [25918282.637201] Killed process 18665 (redis ...

Posted on Mon, 29 Jul 2019 00:56:02 -0700 by menios

Use of five different values of CSS position

position attribute The position attribute specifies the type of positioning method (static, relative, fixed, absolute or sticky) used for elements. There are five different values: static relative fixed absolute sticky Then use top, bottom, left, and right attributes to locate elements. However, these attributes will not work unless th ...

Posted on Mon, 29 Jul 2019 00:44:55 -0700 by daedalus__