Programmer Think

1, Introduction to program flow control Sequential controlBranch controlCycle control 2, Sequential control 1) Connotation 2) Flow chart 3) Note = = the definition variable adopts legal forward reference 3, Branch control 1. Basic introduction of branch control Single branchDouble branchMulti branch 2. Single branch control ...

New features of experimental Go generics: I Prerequisite: run the following two lines of commands to download the go compilation environment that supports running generics. go get golang.org/dl/go1.18beta1@latest // Download go1 18beta1 executable file to the bin directory of go configuration go1.18beta1 download // Check whether the download ...

Functional encapsulation in the Go language is done through functions, and different structures can be unified through interfaces. Combined with reflection characteristics, large and complex projects can be developed. 1. Definition of functions The Go language supports object-oriented programming, but functions are the basic elements of th ...

1, Array An array is a collection of data of the same type. Each data contained in the array is called an array element. This type can be the original type of meaning, such as int, string, etc., or a user-defined type. The number of elements contained in an array is called the length of the array. In Golang, array is a data type with a fixed l ...

What is slice The length of the go array cannot be changed, so such a set is not applicable in a specific scene. Go provides a flexible and powerful built-in type slice ("dynamic array"). Compared with the array, the length of the slice is not fixed, and elements can be added, which may increase the capacity of the slice The slice t ...

introduceThrough a complete example, in gogf/gf In the framework, the configuration files are distinguished according to the environment. That is, how to read different configuration files in [test], [Online] and other environments.We will use rk-boot To start gogf/gf Microservices.Please visit the following address for a complete tutorial:http ...

1 reflect 1) Definition of reflection: in computer science, reflection refers to the access, detection and repair of computer programs at Run time An ability to change its own state or behavior. Figuratively speaking, reflection is that the program can "observe" and repair when running Change your behavior. 2) The meaning of go ref ...

Summary of basic knowledge of Golang language 1.go language has two types: Value type: numeric type, bool, string, array, struct structure Variables store values directly. Memory is usually allocated in the stack. Modifying the value will not affect the source objectReference types: pointer, slice, pipe, chan, map, interface The variable stor ...

Let's take a look first: About JSON number Cross reference relationship between golang data type and json type: bool, for JSON booleans float64, for JSON numbers string, for JSON strings []interface{}, for JSON arrays map[string]interface{}, for JSON objects nil for JSON null There is no int64 type in json. When deserializing, if you dire ...

[TOC] Sharing of GO channel and sync package Let's review what we shared last time: If there are no restrictions on GO synchronization, data race will occurWe use locks to solve the above problems. We choose to use mutex locks and read-write locks according to the usage scenarioA better way than using locks is atomic operations, but using go ...