OpenResty-------- Enterprise Starter Practice

prospect The previous section introduces information such as OpenResty's core concepts, strengths and architecture, and it is recommended that you watch it at least once before proceeding with this article. OpenResty-------- Practice of Enterprise-level TheoryThis article will install OpenResty and write the first application.Note: This artic ...

Posted on Wed, 31 Jul 2019 14:35:31 -0400 by blyz

sed of Linux Notebook Three Swordsmen

I. Introduction   sed (Stream Processing Editor) is a powerful non-interactive streaming text editor under Linux. It can add, delete, modify and check text files. It supports matching text content by line, field and regularity. It is flexible and convenient, especially suitable for editing large files. sed reads the contents of the file line ...

Posted on Wed, 31 Jul 2019 12:28:29 -0400 by pinehead18

Luogu P5470/LOJ3158[NOI2019] sequence

For unmatched $k-l $elements, it is obvious that the largest one is the best. Then repeat the $l $time pairing: if there are currently unmatched alternatives (two at a time, or a pair appears at the beginning), then select the maximum value in the unselected pair; otherwise either choose an unselected and selected pair, then choose another pai ...

Posted on Wed, 31 Jul 2019 11:57:03 -0400 by Artem Kozmin

Map's common API

` public V put(K key, V value) `: Adds the specified key and value to the Map collection. public V remove(Object key): Delete the key-value pair element corresponding to the specified key in the Map collection and return the value of the deleted element. public V get(Object key) gets the corresponding value in the Map collection ac ...

Posted on Wed, 31 Jul 2019 11:09:43 -0400 by cgrenda

Template View of Line Segment Tree Advancement

—————————————————————— Knowing the universe, I still pity the grass and trees. First of all, I will introduce an excellent blog by Logu: https://www.luogu.org/problemnew/solution/P3372  -------------------------- ...

Posted on Wed, 31 Jul 2019 11:08:26 -0400 by virtuexru

Element el-badge view in el-tab is not rendered

We found that variables bound by el-badge have data, but they are not rendered on the interface. At this point, executing getTodo finds that the data has been printed out when the view has not sent a change. So consult the information: vm.$forceUpdate()Examples:Force the Vue instance to re-render. Note that it only affects the instance itself ...

Posted on Wed, 31 Jul 2019 07:01:20 -0400 by lisaNewbie

Copy folders to another folder in Java

1. Copies of folders public static void copyDir(String sourcePath, String newPath) { File start = new File(sourcePath); File end = new File(newPath); String[] filePath = start.list(); //Get the names of all files and directories under this folder if(!end.exists()) { end.mkdir(); } ...

Posted on Wed, 31 Jul 2019 02:17:48 -0400 by AKalair

Comet OJ - Contest # Fictitious Graph Theory (Graph Blocking)

For a given undirected graph, $i $dot weight, $b_i$, edge $(x,y,z)$contributes to the sequence by adding $A [b_x oplus b_y]$plus $z$. There are three operations: 1. Modifying point weight; 2. Modifying edge weight; 3. Finding sequence $A $interval and.   The graph is divided into degrees. For lighter contributions, direct tree array mainten ...

Posted on Wed, 31 Jul 2019 00:51:31 -0400 by dupreelove

Selenium Tool Crawls Commodities

selenium is an excellent automated testing tool that supports multiple languages. Reference to official documents: https://www.seleniumhq.org/docs/. Next, we use the selenium tool to simulate the user clicking on the product details page to get a preview of the product. I. Installation of selenium pip install selenium II. Testing and In ...

Posted on Wed, 31 Jul 2019 00:37:45 -0400 by ValdouaD

HDU6582 Path Shortest Path + Minimum Cut

Website: https://vjudge.net/problem/HDU-6582 Topic: Given a directed acyclic graph with multiple edges, the cost of deleting an edge is the length of the edge, and the minimum cost of making the shortest path of point $1 and point $n longer or no shortest path exists. Solutions: For a subgraph consisting of edges in the shortest path of two ...

Posted on Wed, 31 Jul 2019 00:35:43 -0400 by JPark