Go Memory Optimizer (i)-struct

Principle About Golang The writing order of field in the same struct will be different for different memory allocation sizes. The main reasons are as follows: The field memory allocation within a struct is based on 4 B and must be exclusive at 4B.

Golang Common face questions

1. Slices vs. arrays (1). ArrayAn array is a sequence that has a fixed length and has 0 or more elements of the same data type.The length of the array is part of the array type, so [3]int and [4]int are two different types of arrays.(2). SlicingA

The technology stack used by Hangzhou head office

The technology stack used by Hangzhou head office Golang Gateway (front background routing, anti-crawler, authentication) Go language is better for high concurrency support Python-related projects for data processing, Java Web, micro-service

Golang implements spider programs that crawl IP addresses

Background To do IP address attribution to query, the volume is large, so I want to find most of the distribution data from the Internet, write a spider program to crawl the storage, in the process of the operation of continuous maintenance, update,

Golang implements spider programs that crawl IP addresses

Background To do IP address attribution to query, the volume is large, so I want to find most of the distribution data from the Internet, write a spider program to crawl the storage, in the process of the operation of continuous maintenance, update,

Golang two fork Tree pre-order, middle sequence, post-order non-recursive traversal algorithm

package mainimport  (    "container/list"     "FMT")// binary  Treetype binarytree struct {   data  interface{}   left   *binarytree   right *binarytree}// constructorfunc newbinarytree ( data interface{})

Gor Drainage Test middleware Golang Code add comment

Package Main Import ("Bufio""Bytes""Encoding/hex""FMT""Github.com/buger/goreplay/proto""OS") RequestID-Originaltokenvar originaltokens map[string][]byte Originaltoken-Replayedtokenvar tokenaliases map[string][]byte Func Main () {Originaltokens =

Runtime Error:invalid memory address or nil pointer dereference

2018/06/27 21:24:20 http:panic serving 10.105.107.106:34988:runtime error:invalid memory address or nil pointer Derefe Rencegoroutine 1242 [Running]:net/http. (*conn). SERVE.FUNC1 (0xc4202fe000)/usr/local/go/src/net/http/server.go:1726 +0xd0panic

Golang Selection Sorting algorithm

Select the principle of sorting: Each time from the rest of the number to find the smallest, side to the beginning of the remaining number. package mainimport "fmt"func main() { numbers := []int{6, 2, 7, 5, 8, 9} SelectSort(numbers)

Golang a simple chat room with TCP protocol

Usually the chat room architecture is divided into server-side and client: Server-side:Accept the connection request from the client and establish the connection;All client connections are placed into the connection pool for broadcast

First GO Program

Package Go language has been wrapped as a management unit Each file must be declared first: package Each file must consist of a main package Import for importing libraries The referenced library must be used Entry

Go installation Environment

-1. Download go: Address is https://golangtc.com/download -2. Install: English version, always click Next -3. Check if the installation is successful: -3.1 Cmd:a.go version #查看版本 -4. Test environment: Create a Hello.go file with the following

Go language Environment building (based on go1.8)

Linux (CentOS redhat) installation1. Access to the official address:https://golang.org/dl/Because of the relevant ZC you know, it's better to go through the wall.2. Download the 64-bit Green

Golang priority issues in select (Drip interview)

The first two days, in the Drip interview, was asked to achieve priority in select, but know that the event in select is triggered randomly, did not think how to implement, the interviewer told you can use the default implementation, think of the

Install Bitcoin Golang Implementation BTCD Project encountered pits

Problem 1:glide Install | Unable to checkout Golang.org/x/crypto | Cannot detect VCS WORKAROUND: Glide Mirror set https://golang.org/x/crypto https://github.com/golang/crypto--vcs git The generated mirrors.yaml is stored in the user directory.

Lightweight asynchronous task dispatcher based on Golang channel

Project Address: Https://github.com/chenhg5/go ... Sometimes in order to make better use of the computer resources, we can put some time-consuming task queuing asynchronous execution. To give a simple example of life is the majority of restaurants

Make parameters (for pits)

The third parameter of Golang make () Study for a period of time Golang, probably can use Golang to do some small things, so review some of the basic things. Golang allocated memory has a make function, the first parameter of the function is the

Analysis of Golang interview

Recently in many places to see the golang of the face of the test, see a lot of people on the golang of the face of fear, but also to review the basis, I put the process of solving the problem summed down. Interview questions 1. Write out the

Golang Personal Blog Design

1. Select the framework first, and feel that the application of the blog class is suitable for Beego this mature MVC framework.Or it can be completely separated from front to back, using the Vue framework for the frontend, and the backend using the

Do blockchain development, how is the German chain of wisdom?

Full Name: Germany Fang Zhi chain Technology (Shenzhen) Co., Ltd. Date of establishment:May 8, 2018 Job Openings : Blockchain Development Engineer Salary Treatment:30-50k Recruitment requirements: Gang bit Responsibilities 1. Responsible

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