MySql 5.7.26 Installation-free version configuration process and related problem solving (win10 version)

I. Download and Installation 1. Download MySQL 5.7.26 Download address: https://dev.mysql.com/downloads/mysql/ After downloading, decompress to a custom path. It is important to note that there is no Chinese in the path. 2. Create a new INI file named my.ini The contents are: [mysql] # Sett ...

Posted on Mon, 14 Oct 2019 08:43:10 -0700 by cjbeck71081

Common Property Settings and Common Events for TreeList of DevExpress

scene Winform Control - DevExpress18 Download, Install, Register and Use in VS: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100061243 How does DevExpress's TreeList set up the data source? https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/102548490 Implementing a simple TreeList and setting up the data source on it, t ...

Posted on Mon, 14 Oct 2019 07:10:04 -0700 by liquidchild

Express Logistics Single Number Information Inquiry Call Express Bird API

E-commerce platforms and small programs have logistics modules, which need to inquire about the status of logistics trajectories. It is very troublesome for every family to dock with Shunfeng, Shentong, Zhongtong, Yuantong, Yunda, Baishi, Post, EMS, Jingdong, Tiantian, Debang, Aneng and other express single inquiry interfaces and electronic one ...

Posted on Mon, 14 Oct 2019 00:21:05 -0700 by herreram

Several sentences of java code do 100,000 why data

Recently, I want to make an app to recommend 100,000 stories of why for children, but after looking for a long time data, I found it very difficult to find, and went to write crawlers, found that there is no good website to climb, the last chance to find a usable interface on csdn, and quickly solved the problem. Attached below is the way to im ...

Posted on Sun, 13 Oct 2019 10:47:00 -0700 by ognotongo

JS Monitor Window Change and Element Change

resize incident brief introduction Can be used to monitor changes in Windows objects Application: Change rem according to window // Datum size const baseSize = 41.4; // Setting rem function function setRem(width) { // The current page width scaling ratio relative to 414 width can be modified according to their own needs. const scale = width ...

Posted on Sat, 12 Oct 2019 14:14:49 -0700 by byenary

Method of generating dump file by accidental crash of qt program under windows

After running for a period of time, the program exits unexpectedly without prompting any error information. This may be a memory leak, but without prompting error information, it is difficult to locate the specific code. We can generate dump files and locate the error location. Add code to the proje ...

Posted on Thu, 10 Oct 2019 08:50:29 -0700 by dharvey

HSV-based background matting demo (opencv)

  Design sketch:   introduce This is a simple rough matting demo, based on HSV matting. Suitable for similar background color. But because it's demo, it's rough. In the process of writing, I read a lot of blogs, so a lot of content is learned from Daniel's blog. If there are similar codes ...

Posted on Thu, 10 Oct 2019 00:28:35 -0700 by Bottyz

Windows operation and groupBy operation

Windows operation import spark.implicits._ val words = ... // streaming DataFrame of schema { timestamp: Timestamp, word: String } // Group the data by window and word and compute the count of each group val windowedCounts = words.groupBy( window($"timestamp", "10 minutes", "5 minutes"), $"word" ).count()   Windows operation ...

Posted on Wed, 09 Oct 2019 13:27:26 -0700 by SulleyMonstersInc

Python cannot install PyAudio

I. Errors and Causes There are no wheels (pre-built packages) for Python 3.7 on Windows (one for Python 2.7 and 3.4 to 3.6), so you need to prepare the build environment on your PC to use this package. Because some packages are hard to build on Windows, it's easier to find the wheel of 3.7. This is th ...

Posted on Wed, 09 Oct 2019 09:07:21 -0700 by stevehaysom

Popup Windows Usage Details

Strongly Recommend Articles: Welcome to CollectionAndroid Dry Goods Sharing Read for five minutes, ten o'clock a day, and study with you for life. Here's Android, a programmer. This article mainly introduces some knowledge points in Android development. By reading this article, you will gain the following contents: Popup Windows Inheritance ...

Posted on Wed, 09 Oct 2019 05:54:54 -0700 by crouse