[Front-end Learning] JavaScript keyword this and closure understanding

Links to the original text: https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Closures 1,this this is not fixed in JavaScript; it changes with the execution environment. In the method, this represents the object to which the met ...

Added by Gregg on Tue, 17 Sep 2019 14:49:27 +0300

Re-start learning Java-File And Streams

Note: This article only describes the basic usage, and does not touch on the NIO, the NIO aspects of things, described in a later blog. Random Access File is placed before it is described. File In the filename system, the filename is used to locate the storage location metadata: the data describing the data, where we treat a file as a data, the ...

Added by shalinik on Tue, 17 Sep 2019 12:34:29 +0300

How does Java Express Single Number Query Interface Access Logistics API

How Java writes logistics interface, how to access logistics interface, how to query logistics tracking details according to single number demand According to the order number inputted by users, our backstage identifies the order number and inquires the Api interface of express delivery according to the express bird to realize the function of a ...

Added by brucemalti on Tue, 17 Sep 2019 11:34:50 +0300

Using openpyxl to read and write excel files

Article directory 1, configuration 2. Installation module: 3. Reading and writing: Note 1: Note 2: 3. demo code: 4. Read all rows under all worksheets of an Excel table 5. Merge all worksheets under an Excel table (or merge multiple Excel tables ...

Added by marinedalek on Tue, 17 Sep 2019 07:29:22 +0300

Initial Notes for the java crawler webMagic Framework

If you need to get data on a web page because of business or personal interests, the java crawler is necessary to contact and master. I am also the first time to contact the crawler framework. I searched several webMagic on the web and tried to learn ...

Added by Cerberus_26 on Mon, 16 Sep 2019 05:07:56 +0300

iconfont font icons and various CSS icons

Links to the original text: https://www.mk2048.com/blog/blog.php?id=000iac1hj&title=iconfont%E5%AD%97%E4%BD%93%E5%9B%BE%E6%A0%87%E5%92%8C%E5%90%84%E7%A7%8DCSS%E5%B0%8F%E5%9B%BE%E6%A0%87 Foreword: This is the author's own understanding an ...

Added by kyoru on Thu, 12 Sep 2019 15:07:04 +0300

Talk about the most difficult design pattern - singleton pattern

Many people are sure to be confused, because in your impression, the singleton mode is still very simple to implement. Don't worry. Look down slowly and you'll see why I said it was the hardest. 1. Basic concepts Singleton pattern is a commonly used creative design pattern. The singleton pattern ensures that the class has only one instance a ...

Added by Siann Beck on Wed, 11 Sep 2019 14:54:00 +0300

How to make matplotlib display Chinese smoothly in Ubuntu 16.04

How to make matplotlib display Chinese smoothly in Ubuntu 16.04 1. Identify the matplotlib you are using 2. Download simhei font for Ubuntu 16.04 3. Modify the matplotlibrc file 4. Delete ~/.cache/matplotlib/ 5. Close the python kernel, reopen and ...

Added by mynameisbob on Wed, 11 Sep 2019 09:08:10 +0300

The Way to Fill the Pit with Wechat Small Program Service Provider Model

The Way to Fill the Pit with Wechat Small Program Service Provider Model Having read the posts of this predecessor, I have come out of the deep pit and added a few easy mistakes by the way: https://blog.csdn.net/qq_18881987/article/details/94428628 ...

Added by Pegasys on Wed, 11 Sep 2019 07:24:04 +0300

Flink Notes-Delayed Data Processing

Flink Notes-Delayed Data Processing Out Of Order&Late AllowedLateness&OutputTag On Output Tag Flink's window processing streaming data provides a WaterMark mechanism based on EventTime, but it can only solve the problem of data disorder ...

Added by Amanda1998 on Sat, 07 Sep 2019 14:34:19 +0300