Programmer Group

Learn what What is a map? How to create a map? Determine whether the key exists? How to get the map length? How to traverse a map? How to delete key / value pairs? Is map a reference type or a value type? concept map is an unordered set of key / value pairs, which is called dictionary, associative array, hash table and so on in other langua ...

Learn what What is slicing? How do I create slices? How to get slice length and capacity? The relationship between slices and arrays? Operation slice specific elements? How are slice elements appended and removed? Is the slice a reference type or a value type? How do I copy slices? How do I create multidimensional slices? What is the slice st ...

introduce The author is a senior student who is new to safety. If there are mistakes in the article, please point out! At first, it was considered to use pure matching, but this method is too strict, and the code written by programmers has various possible combinations Therefore, I tried to realize java lexical analysis and syntax analysis ...

I will explain the construction under Linux, Windows and Mac systems one by one, including the configuration of the editor. What to prepare? Go installation package: Win Go installation package,Linux Go package (binary),Mac Go package Git environment, Go downloads dependent packages with the help of GIT tools, which will not be explained here. ...

Explain When you compile code using the go build or go install commands, you can use the -buildmode l to specify what file to generate. go build -buildmode=<mode> perhaps go install -buildmode=<mode> Use go help buildmode l to view all supported buildmodel options. -buildmode=archive Build the listed no ...

Write in front Everyone may be tired of Python crawlers. Let's play with Golang crawlers! This article will be continuously updated! Mind map To get the original image or. xmind format, scan at the end of the text and reply to the Go crawler Golang provides the net/http package, which supports request and response natively ...

The article continues to look at how the framework executes handler and some other middleware Middleware format func(resp http.ResponseWriter, req *http.Request) func(ctx *macaron.Context)     func(resp http.ResponseWriter, req *http.Request,ctx *macaron.Context) Is it much more flexible than other web frameworks (* ~) ~ You can also custo ...

function Start the function, which is almost beginning to enter the deep water of golang Function declaration In fact, when I started to write the first program using golang, I began to use the function, that is, the main function, but the simple main function has no parameter list and return value list. Unlike C language, the return value o ...

Recently, we need to implement a gadget to forward post requests to the specified back-end service. Because we always want to learn the gin framework, we use this framework to try. It is expected to produce several articles. This paper studies how to test the forwarding tool by using nginx container and back-end service. summary The forward ...

From: month https://www.lixueduan.com Original text: https://www.lixueduan.com/post/kafka/06-sarama-producer/ This paper mainly analyzes the implementation principle of Kafka Go sarama client producer through the source code, including the specific steps of message distribution process, message packaging processing, and finally sending to Kaf ...