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background After the front end clicks the export excel button, it requests the data to be exported and sends it to the main process, electron, which saves it locally dialog Displays native system dialog boxes for opening and saving files, alarms, and so on. The dialog module provides an api to show the native system dialog box, such as open f ...

Build mysql database and mysql common high-frequency commands I. environment construction II. Common commands 2.1 database operation 2.2 data table operation 2.3 view operation 2.4 data operation (add, delete, modify and query) I. environment construction This paper only builds learning in windows environment. Downlo ...

Preface The text and pictures of the article are from the Internet, only for learning and communication, and do not have any commercial use. The copyright belongs to the original author. If you have any questions, please contact us in time for handling. Author: Liu Quan @ CCIS Lab PS: if you need Python learning materials, you can click the lin ...

Registration on April 22, 2019 Class notes April 8, 2019 In windows environment, write the first program "hello world" with python 1 print("Hello World!!!")   Class notes April 12, 2019 In windows environment, write the first user interaction program "input" with python 1 death_age=120 2 3 print("game star ...

Reprinted from: https://www.cnblogs.com/retry/p/9328715.html QChar of QT QChar class is a class used to represent a character in Qt, which is implemented in QtCore shared library. The QChar class internally represents a character in 2-byte Unicode encoding. Coding //char type is a built-in type in c/c + +, which describe ...

This is a post about Groovy Shell and how it can help you in your daily work (as long as you are a software developer). No matter what programming language or technology you use, you can benefit from Groovy Shell. The only real requirement is that you can write (and read) a small piece of Groovy code. Introduction I think the purpose of Groovy ...

After learning Groovy's core grammar, I'll move on to Gradle. Gradle is a system building tool whose DSL is based on Groovy. Most of its functionality is achieved through plug-ins. If built-in plug-ins do not meet your needs, you can customize your own plug-ins. Gradle Getting Started and Exploring Life Cycles We can Reference Documents Get sta ...

I. search for data and access as many IP proxy data as possible, and store the IP proxy pool 2. Filter the data from the agent pool and add the valid data to another table, and update it in time III. update IP proxy pool regularly Because the IP address of the website needs to be updated in real time, and the program needs to fi ...

os.getcwd() Return the absolute path to the current working directory Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)] on win32 Type "copyright", "credits" or "license()" for more information. >>> import os >>> print(os.getcwd()) C:\Users\28914\AppData\Local\Programs\Python\Python37 os.chdir( ...

SysMets.h The structure of SysMets.h in the book is struct { int iIndex; TCHAR * szLabel; TCHAR * szDesc; }; **However, errors are reported during compilation. All TEXT macros in SysMets.h report errors. The errors are Severity code description project file line suppress status Error (activity) the value of type E0144 &q ...