golang pubsub

tampered with on the propagation path. RSA Golang Encryption and decryption In PHP, many functions are often a function of the solution, while the go is not. This article will use PHP encryption, go decryption, go encryption, PHP decryption to learn about the RSA-related API. This article discusses go RSA encryption and decryption. All operations are done under Linux. I. Overview This is an asymmetric encryption algorithm, generally through publ

principleDirect insertion of sorting is also a very simple sorting algorithm.The first round starts with the second element, and the first compares, if smaller, the swap position, the end of this round. The second round starts with the third element, compared with the second one, if smaller is the second interchange, and then the first comparison. This loops until the last element completes the comparison logic.Complexity ofIn the best case, the direct insertion of the sort requires only a n-1 c

In Golang, there are two types of arrays and slices. A slice is a reference type, and an array is a value type. If you want to pass in a pointer parameter to an array in a function, you must specify the number of arrays, asFunc Stringtorunearr (S string, arr *[5]rune) If you remove 5 from arr *[5]rune, it means that the parameter becomes a slice type, the pointer to the array is not passed in, the compilation will be error, then must write the length

there are arrays: [8,12,6,33,12,5,4,94,63,23,75,22,43,27,46], in N/2 increments, then the whole sort process is this:Complexity ofDifferent incremental complexity. The average time complexity for N/2 is O (n^2).Compared with the direct insertion of the sort, hill sort reduced the number of comparisons and exchanges, and in small and medium-sized sorting, performance was better. But as the amount of data increases, there is still a big gap between hill sorting and other better sorting algorithms

1. Array: A fixed-length sequence of the same data type.2. Array definition: var a [Len]int, for example: Var a [5]int3. Length is part of the array type, so var a[5] int and var a[10]int are different types4. The array can be accessed by subscript, which starts at 0 and the last element is len-1For I:=0;i}5. Access is out of bounds, if the subscript is outside the bounds of the array, it will trigger an out-of-bounds, panic exceptionPackage Mainimport"FMT"Func Main () {varATen]inta[0] = -FMT. P

Package Mainimport ("net/http" "FMT" "Strings" "Log") Func sayhelloname (w http. Responsewriter, R*http. Request) {r.parseform () fmt. Println (R.form) fmt. Println ("URL", R.url. Path) fmt. Println ("Scheme", R.url. Scheme) fmt. Println (r.form["Url_long"]) forK, v:=range R.form {fmt. Println ("Key:", K) fmt. Println ("Value:", strings. Join (V,"") } fmt. Fprintln (W,"Hello Web")}func Main () {http. Handlefunc ("/", Sayhelloname) Err:= http. Listenandserve (": 9876", nil)iferr!=Nil

Bubble sort Funcbubblesort (Vector[]int) {fmt. Println ("Bubblesort") fmt. Println (vector) fori:=0;i Insert Sort Funcinsertsort (Vector[]int) {fmt. Println ("Insertsort") fmt. Println (vector) fori:=1;i Select sort Funcselectsort (Vector[]int) {fmt. Println ("Selectsort") fmt. Println (vector) fori:=0;i Binary selection sort Funcbinaryselectsort (Vector[]int) {fmt. Println ("Selectsort") fmt. Println (vector) n:=len (vector) fori:= 0;i Basic Sorting algorithm (

local file.It should be noted that after reading the resource data, the resource flow should be closed in time to avoid the leakage of memory resources.In addition, when dealing with exceptions, we used fm.Fprintf() this method, which is one of the three methods of formatting:Printf: Formats the string and outputs it to os.Stdout medium.Fprintf: Formats the string and outputs it to the specified file device, so the parameter is one more file pointer than printf FILE* .Sprintf: Formats the strin

This article is an introductory article that introduces the techniques used by Golang Web programming through a simple example.The structure of the article includes: Client-get Request Client-post Request Server processes Get and Post data In the encapsulation of data, we use JSON in part, so this article also involves the encoding and decoding of JSON in Golang.First, Client-getPackage Mainimport ( "FMT" "Net/url"

The method of Golang operation MongoDB is described in this paper. Share to everyone for your reference. The implementation methods are as follows: Copy Code code as follows: Package Main Import ( "FMT" "Launchpad.net/mgo" "Launchpad.net/mgo/bson" ) Type Mail struct { Id Bson. ObjectId "_id" Name string Email string } Func Main () { Connecting to a database Session, Err: = MgO. Dial ("127.0.0.1") If Err!= nil { Panic (ERR)

It is believed that many friends who switch from C + + to Golang often have a headache for the input control in go ... Especially if you want to simulate the following code in the C language on go, you'll get a little confused: Char input[100]; while (1) { if (scanf ("%s", input) = EOF) { printf ("Enter end \ n"); break; } } The above code can terminate the input by entering a ctrl+z (EOF) in the console: The int scanf ()

-----Star topological fractal design of Golang distributed design pattern In the previous layered design, the simple pipelining principle was used to realize the simple State transfer design. As follows We will consider another situation in this article. For example, process management in the Linux kernel. All processes have a parent process. When a child process is running normally, there is basically no communication with the parent process. Ho

First download Golang package, download address: Http://pan.baidu.com/s/1hq1mrDMEnter the Go folder, and then enter the corresponding version number, If your system is 32 bit is the go1.4.2.linux-386.tar.gz,64 bit is go1.4.2.linux-amd64.tar.gz, download well, unzip get go folder, we use the command to move to the system directory: sudo MV went/ usr/local/Enter the administrator password, no hint is successful, and then modify profile file, command is

Golang is installed in a variety of ways, today the new one [Www.111cn.net] uses its own standard installation method. First go to the official download address to download their corresponding installation package go download address: URL A new Download (go1.1.1.linux-386.tar.gz) installation package, download completed after the extract into the/usr/local/directory Tar xzvf go1.1.1.linux-386.tar.gz-c/usr/local/ Then set the environment variable f

The go language is the second open source programming language published by Google 2009. The go language is optimized for the programming of multiprocessor system applications, which can be used to match the speed of C or C + + code, and to be more secure and support parallel processes. Or my own computer, I installed the Ubuntu 12.04 version, directly introduce the installation bar! In fact, it is very simple to build environment! Copy Code code as follows: sudo apt-get inst

Implementation logic 1, Golang version 1.3 2. Principle of realization: 1. The main process establishes the TCP listening service and initializes a variable Talkchan: = Make (Map[int]chan string) 2, when the main process accept connection request, use go to start a coprocessor to maintain the connection with the client, the Taokchan into the association Chengri 3, and the client to establish a connection to the coordination of a, send a message t

The Golang time package provides a way to display and manipulate times. As a matter of reference, go does not format time like Ymd in other languages, but instead uses the following time template:Mon 2 15:04:05-0700 MST 2006 The following examples provide a common time for formatting and display operations:Package MainImport ("Time""FMT")Func Main () {Current time stampFmt. Println (time. Now (). Unix ())//1447682568Format the current timeFmt. Print

The examples in this article describe the Golang daemon usage. Share to everyone for your reference, specific as follows: With node wrote a socket background service, but sometimes hang, node an exception on the game over, so wrote a waiting. Copy Code code as follows: Package Main Import ( "Log" "OS" "Os/exec" "Time" ) Func Main () { LF, err: = OS. OpenFile ("Angel.txt", OS. O_create | Os. O_rdwr | Os. O_append, 0600) If Err!= ni

The example of this paper describes the Golang unit operation. Share to everyone for your reference, specific as follows: Copy Code code as follows: Http://play.golang.org/p/idG7Ri_krU Package Main Import "FMT" Func Main () { var n uint8 = 6 Fmt. Printf ("%s\n%08b\n%08b\n\n", "6Fmt. Printf ("%s\n%08b\n%08b\n\n", "6>>1 1-bit Right", N, n>>1) Fmt. Printf ("%s\n%08b\n%08b\n\n", "^6 bit Counter", N, ^n) Fmt. Printf ("%s\n%08b\n%08b\n%08b\n\

The example of this article describes the Golang implementation of a simple UDP protocol server and client. Share to everyone for your reference, specific as follows: In fact, UDP does not have any server and the concept of the client, just a send a collection, just so more convenient to identify and understand. Service side: Copy Code code as follows: Package Main Import ( "FMT" "NET" ) Func Main () { Create a listener Socket, ERR