Programmer Group

preface In the concept of object-oriented programming, an application is an abstraction of the real world. We often model real things as classes / objects ("what") in the programming language, and the behavior of things as methods ("what to do"). Object oriented programming has three basic characteristics (encapsulation, in ...

objective The purpose of grpool is to control the number of goroutines to execute tasks, so as to avoid creating too many goroutines and causing the memory consumption to soar Simple use func UseWorkerPool() { pool := grpool.NewPool(100, 50) defer pool.Release() for i := 0; i < 10; i++ { count := i pool.JobQueu ...

Writing neat and easy to test and maintain code is very simple at first glance, but it is not easy to do in practice. Fortunately, the birth of go language is accompanied by a set of best practices for us to learn and refer to. In my experience, these best practices have a positive effect on code quality measurement and can reduce the increase ...

Kubernetes 1. Introduction to kubernetes 1.1 evolution of application deployment mode There are three main periods in the way of deploying applications: Traditional deployment: in the early days of the Internet, applications will be deployed directly on physical machines Advantages: simple, without the participation of other techno ...

2021SC@SDUSC introduction In a oj system, the core content is the judgment part. Whether it is a real user or a question judging machine, to detect whether the code written by the user is correct, you only need to compile the source file where the running code is located, and then compare whether the program output result is the same as the s ...

math/rand package crypto/rand package generates random numbers This part is supplementary and does not involve concurrency 1. math/rand package math/rand package implements the pseudo-random number generator 1.1 main methods (1)func Seed(seed int64) Set random seed. If not set, the default seed is (1) (2)func Int() int Retur ...

1. Use channel s to wait for the task to finish Used in many places in the previous content:time.Sleep(time.Millisecond)For example: func chanDemo(){ var channels [10]chan int //Create channel Array for i := 0; i < 10; i++{ channels[i] = creatworker(i) } for i := 0; i < 10; i++{ channels[i] <- 'a' + 1 ...

go language basic data types Go is a strongly typed language. This means that each variable you declare is bound to a specific data type and accepts only values that match this type. Go has four types of data: Basic types: numbers, strings, and BooleansAggregate types: arrays and structuresReference types: pointer, slice, map, function, and ...

This paper is a summary of knowledge for September 221. R&D Coding C / C++ None. golang Several passages related to time conversion: exTime := "20210901" mytime, _ := time.Parse("20060102", exTime) fmt.Println(mytime.UTC().Unix(), mytime.Local().Unix()) // Convert in local time format mytime, _ = time.ParseI ...

preface I'm a programmer. This is the tutorial (part2) for creating the zero foundation of gin + vue. I will update the front and back source code of this tutorial to my gitee account synchronously: https://gitee.com/coderwusi . github account: https://github.com/coderwusi. Create a new project root folder, gin base cli, and create a new mai ...