Fast start fapy

Fast start fapy Understanding of fapy package install features Examples of use Usage of command line tools (ytdl) ytdl example: Understanding of fapy package Today, when I was paddling the water, I picked YouTube. After a fierce operation, I couldn't find the url I wanted. So I googled it and ...

Posted by frikus on Thu, 18 Jun 2020 21:15:56 -0700

Inside of Rust async/.await

In this tutorial, we will analyze the internal running mechanism of async/.await in detail. We will use the async STD library instead of tokio, because this is the first t rust library that supports async/.await syntax. The tutorial of async/.await principle analysis is divided into two parts, which is the first part. Blockchain development tu ...

Posted by Imad on Thu, 18 Jun 2020 20:06:38 -0700

Write a calculator program using fyne

brief introduction In the previous article, we introduced fyne, a high-skin GUI library for Go.This article goes on to show how to write a simple calculator program using fyne.The program works as follows: Control Layout We useWidget.EntryTo display the input numbers, operators, and operation results.Create one firstWidget.EntryObject, set to ...

Posted by hrichman on Thu, 18 Jun 2020 18:32:58 -0700

educoder structure and common body

Program fill in blank 1 Task description This task: the function of the program is to simulate the election and count the votes of candidates. Please fill in the program so that it can run correctly and get the result. Relevant knowledge Relevant knowledge Programming requirements Please read the code o ...

Posted by Talon on Wed, 17 Jun 2020 19:17:17 -0700

[Asp.netCore Series) 10 ActionFilter s

0. Preface In the previous article, we mentioned how to create a UnitOfWork and enable it through the ActionFilter setting.In this post, we'll give you a brief introduction to ActionFilter and how to use it to complement the tool classes in the previous article. 1. Introduction to ActionFilter The full name of ActionFilter is ActionFilterAttrib ...

Posted by blankextacy on Wed, 17 Jun 2020 15:03:01 -0700

My development diary

Today, I mainly solved the verification of the login status of the test account. My current solution is to use the special syntax uid=123 when writing the test case, which means that the field of the use case should go to the login credentials of the test account with uid equal to 123. The difficulty is that the login credentials will expire an ...

Posted by tbach2 on Tue, 16 Jun 2020 21:49:56 -0700

Design mode summary

Through encapsulation, inheritance and polymorphism, the coupling degree of the program is reduced, making the program more flexible, easy to modify and easy to reuse Simple factory public class Operation { public double NumberA { get; set; } public double NumberB { get; set; } public virtual double GetResult() { ...

Posted by vanzkee on Tue, 16 Jun 2020 20:45:41 -0700

Chapter 2 Introduction to MyBatis

Simple Edition Create a test table Create the corresponding JavaBean Create mybatis configuration file and sql mapping file test MyBatis operation database Create MyBatis global profile The global configuration file of MyBatis contains settings and properties information, such as database connection pool information, which affect MyBatis' ...

Posted by sumolotokai on Tue, 16 Jun 2020 20:27:06 -0700

File IO programming under Linux

Linux system call refers to a set of "special interfaces" provided by the operating system to user programs through which user programs can obtain special services provided by the operating system. To better protect kernel space, programs are divided into kernel space and user space, which ru ...

Posted by locomotive on Tue, 16 Jun 2020 18:34:54 -0700

HashSet expansion mechanism wastes much more time and space than you think

One: Background 1. Storytelling Since this pure memory project entered the big client, I am now very sensitive to memory and CPU, run a little bit of data memory up and down a few G s, especially insecure, always want to grab a few dump s with windbg to see which one is caused, is my code or my colleague's code?Many old friends who have read my ...

Posted by kulin on Tue, 16 Jun 2020 18:09:34 -0700