Tag：Go language
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Time：2021-5-11
1. Single line import and multi line import In the go language, a package can contain multiple components.goFiles (these files must be in the same level folder), as long as the.goThe header of the file is usedpackageKeyword declares the same package. There are two ways to import packages Single line import import “fmt” import “sync” […]
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Time：2021-4-15
preface The combination of for range in go can easily traverse an array or slice, but in some cases, it is likely to be “pit” when using for range func main() { arr1 := []int{1, 2, 3} arr2 := make([]*int, len(arr1)) for i, v := range arr1 { arr2[i] = &v } for _, v […]
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Time：2021-3-31
The OS / exec package can be used to call external commands, connect input and output with pipelines, and support the execution of commands in blocking and non blocking ways. The key type in OS / exec package is CMD. All the methods described below serve this type: func Command(name string, arg …string) *CmdMethod returns […]
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Time：2021-2-6
1、 Download go language installation package Download address of official website:https://golang.org/dl/, use the tar command to unzip the file package to the / usr / local directory: sudo tar -C /usr/local -xzf go1.11.5.linux-amd64.tar.gz 2、 Add environment variables and work variables to the system environment First enter the profile directory: cd /etc Open profile file: sudo […]
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Time：2020-11-18
There is a problem with golang channel: it is found that the go coprocessor does not execute cooperatively as expected when reading channel data. After checking the data: Due to improper operation of channel, there are buffers and no buffers in channel. The following is the difference between them. No buffer channel Chan created with […]
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Time：2020-11-7
Blackfriday is a markdown processor implemented in go. You can input user provided data safely, fast, support universal extensions (tables, smart punctuation replacement, etc.), and it is safe input for all UTF-8 (Unicode). Currently, HTML output and smartypants extension are supported. use First of all, of course, we should introduce: import github.com/russross/blackfriday then output := […]
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Time：2020-8-22
Each language has its own coding standards. Learning the naming rules of the language can make the code you write easier to read and less prone to low-level errors. According to personal coding habits and some articles on the network, this paper sorts out some coding standards that you can use. It may be some […]
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Time：2020-7-15
1. Preface Golang, as a programming language rising star from a well-known family, is like the redis platform CODIS of Douban, and the cloud notebook like Evernote. 1.1 why study If someone speaks x language better than y language, supporters of both sides often quarrel fiercely. If you’re an old hand at a language, you’re […]
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Time：2020-7-14
install Windows is a direct installation package. Let’s skip here and take a look at the installation of go under Ubuntu sudo add-apt-repository ppa:gophers/go sudo apt-get update sudo apt-get install golang-stable or sudo apt-get install golang Or download the go language installation package directly Environment configuration: vi /etc/profile join export GOROOT=/usr/lib/go export GOARCH=386 export GOOS=linux […]
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Time：2020-7-9
Quick sort is an important sorting algorithm based on divide and conquer technology. Unlike merge sort, which divides elements according to their positions in the array, quick sort divides elements by their values. Specifically, it rearranges the elements in a given array to get a quick sort partition. In a partition, all elements before s […]
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Time：2020-7-8
Quick sort algorithm First of all, put the number on the left side of the recursive array, and then put it on the left side of the number, and then put it on the left side of the number. The key part of the algorithm is to realize the partition of array, that is, how […]
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Time：2020-7-7
flag Flag is a package provided by go standard library to parse command line parameters. Usage: flag.Type(name, defValue, usage) Where type is string, int, bool, etc., and returns a pointer of the corresponding type. flag.TypeVar(&flagvar, name, defValue, usage) Bind flag to a variable. Custom flag As long as it is realized flag.Value Interface can be […]
