Go (Golang) Zip Archive Tutorial

Go (Golang) Zip Tutorial

In this episode we are going to look at how easy it is to use the Go standard library archive/zip package to compress and decompress zip archives in Go. Just by using the zip.Writer and zip.Reader we can easily compress and decompress any type of file into and from an archive.

zip/archive package - https://golang.org/pkg/archive/zip/
Source Code - https://play.golang.org/p/zAPYt14P4oH
Golang Cafe Zip Archive Example - https://golang.cafe/blog/golang-zip-file-example.html

💼 Golang Cafe - https://golang.cafe
📬 Golang Cafe Jobs Newsletter - https://golang.cafe/newsletter
🐦 Golang Cafe Twitter - https://twitter.com/golangcafe
📣 Telegram Channel - https://t.me/golangcafe

#golang #go #zip archive

Go (Golang) Zip Archive Tutorial

Go (Golang) Zip Archive Tutorial

Go (Golang) Zip Tutorial

In this episode we are going to look at how easy it is to use the Go standard library archive/zip package to compress and decompress zip archives in Go. Just by using the zip.Writer and zip.Reader we can easily compress and decompress any type of file into and from an archive.

zip/archive package - https://golang.org/pkg/archive/zip/
Source Code - https://play.golang.org/p/zAPYt14P4oH
Golang Cafe Zip Archive Example - https://golang.cafe/blog/golang-zip-file-example.html

💼 Golang Cafe - https://golang.cafe
📬 Golang Cafe Jobs Newsletter - https://golang.cafe/newsletter
🐦 Golang Cafe Twitter - https://twitter.com/golangcafe
📣 Telegram Channel - https://t.me/golangcafe

#golang #go #zip archive

Go (Golang) Zip Archive Tutorial
Fannie  Zemlak

Fannie Zemlak

1599854400

What's new in the go 1.15

Go announced Go 1.15 version on 11 Aug 2020. Highlighted updates and features include Substantial improvements to the Go linker, Improved allocation for small objects at high core counts, X.509 CommonName deprecation, GOPROXY supports skipping proxies that return errors, New embedded tzdata package, Several Core Library improvements and more.

As Go promise for maintaining backward compatibility. After upgrading to the latest Go 1.15 version, almost all existing Golang applications or programs continue to compile and run as older Golang version.

#go #golang #go 1.15 #go features #go improvement #go package #go new features

What's new in the go 1.15

Anatomy of Conditional Statements and Loops in Go

Go provides if/else and switch conditional statements for code execution based on certain conditions. To execute some code over and over again, we have the for loop.

The if/else conditional statement

Go provides if, if-else, if-else if-else variants of if/else statement we are familiar with. It is used to check a condition, and execute some code when the condition is true or false.

The if condition

Simple use of if condition is demonstrated below. Unlike most of the programming languages, Go does not allow to wrap the condition inside parenthesis ().

#golang #programming #golang-tutorial #go-tutorial #go

Anatomy of Conditional Statements and Loops in Go
Zander  Herzog

Zander Herzog

1596793260

Secure HTTPS servers in Go

In this article, we are going to look at some of the basic APIs of the http package to create and initialize HTTPS servers in Go.

Image for post

(source: unsplash.com)

In the “Simple Hello World Server” lesson, we learned about net/http package, how to create routes and how [ServeMux](https://golang.org/pkg/net/http/#ServeMux) works. In the “Running multiple HTTP servers” lesson, we learned about [Server](https://golang.org/pkg/net/http/#Server) structure and how to run multiple HTTP servers concurrently.

In this lesson, we are going to create an HTTPS server using both Go’s standard server configuration and custom configuration (using [_Server_](https://golang.org/pkg/net/http/#Server) structure). But before this, we need to know what HTTPS really is?

HTTPS is a big topic of discussion in itself. Hence while writing this lesson, I published an article just on “How HTTPS works?”. I advise you to read this lesson first before continuing this article. In this article, I’ve also described the encryption paradigm and SSL certificates generation process.


If we recall the simplest HTTP server example from previous lessons, we only need http.``[ListenAndServe](https://golang.org/pkg/net/http/#ListenAndServe) function to start an HTTP server and http.``[HandleFunc](https://golang.org/pkg/net/http/#HandleFunc) to register a response handler for a particular endpoint.

Image for post

(https://play.golang.org/p/t3sOenOYAzS)

In the example above, when we run the command go run server.go , it will start an HTTP server on port 9000. By visiting http://localhost:9000 URL in a browser, you will be able to see a Hello World! message on the screen.

Image for post

(http://localhost:9000)

As we know, the nil argument to ListenAndServe() call invokes Go to use the [DefaultServeMux](https://golang.org/pkg/net/http/#DefaultServeMux) response multiplexer, which is the default instance of ServeMux structure provided globally by the Go. The HandleFunc() call adds a response handler for a specific route on the multiplexer instance.

The http.ListenAndServe() call uses the Go’s standard HTTP server configuration, however, in the previous lesson, how we can customize a server using [Server](https://golang.org/pkg/net/http/#Server) structure type.

To start an HTTPS server, all we need do is to call ServerAndListenTLS method with some configuration. Just like ServeAndListen method, this method is available on both the http package and the Server structure.

The http.``[ServeAndListenTLS](https://golang.org/pkg/net/http/#ListenAndServeTLS) method uses the Go’s standard server implementation, however, both [Server](https://golang.org/pkg/net/http/#Server) instance and Server.``[ServeAndListenTLS](https://golang.org/pkg/net/http/#Server.ListenAndServeTLS) method can be configured for our needs.

#go-programming-language #go #golang-tutorial #go-programming #golang

Secure HTTPS servers in Go
Neal  Bode

Neal Bode

1599287850

Golang Array Example | Arrays in Go Tutorial Explained

Golang array is a fixed-size collection of items of the same type. The items of an array are stored sequentially and can be accessed using their index. If we want to declare an array in Go, a programmer specifies the type of the elements and the number of items required by an array.

Golang array example

Golang programming language provides a data structure called an** array**, which can store the fixed-size sequential collection of items of the same type.

The array is used to store the collection of data, but it is often more useful to think of the array as the collection of variables of the same type.

Instead of declaring individual variables, such as no1, no2, …, and no99, you declare one array variable such as numbers and use no[0], no[1], and …, no[99] to represent individual variables.

#golang #go #golang array #golang programming

Golang Array Example | Arrays in Go Tutorial Explained