Day04 Hao bin C language self study video process control of C language

This note mainly introduces the first key knowledge of C language, process control, including sequence, selection, cycle, etc. It is expected to take 30 minutes to read this article. Day04 Hao bin C language self study video process control of C language Process Control Overview Process control de ...

Posted on Thu, 27 Feb 2020 00:16:12 -0500 by jonny 5ive

Development of Ethereum smart contract project -- Web3.py library installation and error solution

1, Introduction to Web3.py Library web3.js is a set of JS libraries used to interact with local or remote Ethereum nodes. It can use HTTP or IPC to establish a connection with Ethereum nodes. web3.py is a python library that enables Python applications to interact with Ethereum blockchain. About web3 ...

Posted on Wed, 26 Feb 2020 06:16:36 -0500 by savagenoob

How to use Conda

Conda is a tool for managing versions and Python environments, which is very easy to use.1, Environmental management of Conda 1.1 create environment # Create an environment named py35, and specify that Python version is 3.5 (regardless of 3.5.x, conda will automatically find the latest version of 3.5.x ...

Posted on Wed, 26 Feb 2020 02:28:19 -0500 by enkidu72

How to use Tkinter Library of Python to realize a simple greedy snake -- a rookie's entertainment

Written in front In the special period, college students have become college students at home. They are really in a hurry. At the weekend, I came across Tkinter library by chance and found that it has rich functions and simple usage, so I came up with the idea of using it to draw greedy snakes. Using ...

Posted on Tue, 25 Feb 2020 07:27:23 -0500 by Timsoft

Using Docker to run wechat desktop client on openSUSE

Today with the help of Github user huan Of Boxed WeChat Project, using on my openSUSE Leap system Docker Successfully run wechat client on encapsulated Windows. <!-- more --> Install Docker Installing Docker engine on Linux system is very container. Please refer to Docker container quick start - basic concepts and installation , if you al ...

Posted on Tue, 25 Feb 2020 03:31:13 -0500 by jmack159

Introduction to Dart language

google released a stable version of dart 2.0 yesterday. Dart SDK installation Dart provides three installation methods, namely, using the chocolate package management tool, online installation and offline package installation. For details, see Installation tutorial Page. At present, the online installation will fail due to the wall. You can cho ...

Posted on Mon, 24 Feb 2020 06:19:37 -0500 by CountryGirl

Gorang performance tuning example

Story This blog simulates a data handler and intentionally uses the json module built in go language (with low performance) to complete data serialization and deserialization. Then we find the performance bottleneck of the json module through Benchmark and cpu profile measurement technology. Final ...

Posted on Mon, 24 Feb 2020 05:48:07 -0500 by markl999

New UWP Community Toolkit - ImageEx

Summary There is a picture extension control - ImageEx in the UWP Community Toolkit. In this article, we will explain the implementation of ImageEx in detail with the code. ImageEx is an extended control of pictures, including ImageEx and RoundImageEx. It can display the loading state when loading ...

Posted on Mon, 24 Feb 2020 03:27:26 -0500 by shedokan

The simulation login of python crawler project to Zhengfang educational administration system to obtain the scores (super detailed)

Recently, I stayed at home and had nothing to do. After studying pyhton reptile for several days, I had a preliminary understanding, so I planned to log in to Zhengfang educational administration system to get the result information, so that I could quickly check the result in the future. I was distress ...

Posted on Mon, 24 Feb 2020 01:01:26 -0500 by waradmin

Check whether the directory exists, if not, create

I often find myself writing R scripts that produce a lot of output. I find it cleaner and can put this output in my own directory. What I write below will check whether the directory exists and move into it, or create a directory and move into it. Is there a better way to solve this problem? mainDir <- "c:/path/to/main/dir" subDir <- " ...

Posted on Sun, 23 Feb 2020 06:47:54 -0500 by AL-Kateb