Climbing Blogs on the Home Page of Blog Garden Using node.js

A Simple Blog Garden Reptile Statement: The first time I wrote a blog, what are the errors in the article, please also point out that this example in the spirit of learning, take the blog Park as an example, and do not know whether there are provisions of this blog park, if there are inappropriate, hope Haihan! Analysis Page 1. Open the Home ...

Posted on Wed, 31 Jul 2019 05:07:56 -0700 by paudelvikash

bzoj4326: NOIP2015 transport plan (dichotomy + LCA + tree difference)

Topic link: https://www.lydsy.com/JudgeOnline/problem.php?id=4326 There is a tree with n vertices, and there is a boundary right between each two points. Now there are m transport plans. Each transport plan contains u and v. The cost of a transport plan is the shortest distance between u and v. Now the weight of one edge can be zero, and the m ...

Posted on Wed, 31 Jul 2019 01:57:51 -0700 by dey.souvik007

Simple application of Srping boot + ECharts

In a project, the project requires a broken line chart to show the number of Statistics online (the number of statistics is stored in the database). No broken line map has been done before, so I found it online. Baidu's ECharts, after reading several astronomical documents, tested them (because the documents written on the official website are ...

Posted on Wed, 31 Jul 2019 00:39:13 -0700 by viveleroi0

Escape Plan

Step1 Problem: Original question If a person wants to escape from the city, he gives a graph, but there are corresponding d[i] monsters on each node. The monster will block the shortest way in turn and give k escape points. Please help him calculate the shortest time he can escape from the city in the worst case.   Step2 Ideas: ...

Posted on Wed, 31 Jul 2019 00:04:43 -0700 by kam_uoc

Find a continuous problem over a period of time

grammar ROW_NUMBER() OVER(PARTITION BY column name 1 ORDER BY column name 2) ROW_NUMBER() is a Window function that assigns a continuous integer to each row in the partition of the result set.Line numbers begin with the number of the first line in each partition. The PARTITION BY clause partitions the result set.The ROW_NUMBER() function is ...

Posted on Tue, 30 Jul 2019 14:18:04 -0700 by software4

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