Tag：go
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Time：2020-4-2
closure Closures are often used in functional programming. What are closures? How is it generated and what problem is it used to solve? First, the literal definition of closure is given: closure is an entity composed of function and its related reference environment (i.e., closure = function + reference environment). This is hard to understand […]
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Time：2020-3-20
Explain: I have learned go language (about version 0.9) before, but later it was updated too fast and didn’t use it very much, so it was abandoned. This year, there are projects that need to be developed with go and picked up again. This is the content that I collated in the process of learning […]
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Time：2020-3-11
Preface Before, when writing C / C + + code, you could predefine some version macro definitions in the code, and then pass in data as version number from outside during compilation. Golang code does not support macro definition. If you hard code version information in the code every time, it takes time and effort, […]
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Time：2020-3-6
(1) Int to string s := strconv.Itoa(i) Equivalent to s: = strconv.formatint (Int64 (I), 10) (2) Int64 to string i := int64(123) s := strconv.FormatInt(i, 10) The second parameter is the cardinality, 2-36 are optional Note: for unsigned shaping, you can useFormatUint(i uint64, base int) (3) String to int i, err := strconv.Atoi(s) (4) String […]
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Time：2020-2-25
brief introduction This article mainly introduces the relevant content about the installation and use of protobuf in go language, and shares it for your reference and learning. I won’t say much next, let’s take a look at the detailed introduction. Protobuf is a language independent and platform independent data serialization tool developed by Google, which […]
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Time：2020-2-24
Interface introduction Go language is famous for its simplicity. Its syntax is very simple. It is familiar with C + +. Java developers only need a short time to master the basic usage of go language. Interface is a very important feature provided in go language. One or more functions can be defined in an […]
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Time：2020-2-23
Three methods of parameter transfer in C + + Value transfer: The most common way to pass parameters is to copy the parameters of a function. Changing the parameters in a function does not affect the parameters outside the function. In general, value passing is used when modifying parameters within a function without affecting the […]
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Time：2020-2-21
Map type Let’s look at the example M1: func main() { m := make(map[int]int) mdMap(m) fmt.Println(m) } func mdMap(m map[int]int) { m[1] = 100 m[2] = 200 } The result is map[2:200 1:100] We will modify M2 as follows: func main() { var m map[int]int mdMap(m) fmt.Println(m) } func mdMap(m map[int]int) { m = make(map[int]int) […]
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Time：2020-2-18
Preface This article mainly introduces the relevant content about the parameter transmission of golang, and shares it for your reference and study. I won’t say much next, let’s take a look at the detailed introduction. As for parameter passing, there is a sentence in the golang document: after they are evaluated, the parameters of the […]
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Time：2020-2-11
Preface This article mainly introduces to you the relevant content about the realization of bidirectional copy of TCP connection in golang, which is shared for your reference and study. I won’t say much next, let’s take a look at the detailed introduction. Simplest implementation Every time a server connection comes, a new client connection is […]
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Time：2020-2-9
The declaration of variables in go language is very similar to JavaScript. Using VAR keyword, there are several forms of declaration and definition of variables 1. Variables and constants //Declare and initialize a variable var m int = 10 //Declaration initializes multiple variables var i, j, k = 1, 2, 3 //Declaration of multiple variables […]
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Time：2020-2-4
Preface A few weeks ago, I started working on a portfolio website. Although I can only use react to complete the whole website, I decided to use go to create an API server that can handle some tasks (such as sending email), which I believe is a good practice. One of my pages is a […]
