The Go Programming Tutorials

GoLang Byte Array to String

There are three easy ways to convert byte array to string in GoLang. 1. Byte Array to String using Slice This is the easiest way to convert the byte array to string. We can pass the byte array to the string constructor with slicing. Let’s look at a simple example. Output: String = GOLANG 2. …

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Golang int64 to string conversion

Sometimes we have to convert int64 to string in Golang. We can use different functions to achieve this. Using strconv.Itoa() to convert Golang int64 to string Golang strconv.Itoa() function can be used to convert int64 to string. Let’s have a look at a simple example. Output: 97 Why not use string() to convert int64 to …

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What is rune in GoLang?

Stings are always defined using characters or bytes. In GoLang, strings are always made of bytes. Go uses UTF-8 encoding, so any valid character can be represented in Unicode code points. What is GoLang rune? A character is defined using “code points” in Unicode. Go language introduced a new term for this code point called …

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Golang – Using Gorilla Websockets

In this tutorial, we’ll be looking at how we can use the Gorilla Websocket package in Golang. This library provides us with easy to write websocket client/servers in Go. It has a working production quality Go implementation of the websocket protocol, which enables us to deal with stateful http connections using websockets. The main repository …

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Makefiles with Go

When you’re often working on large projects involving Golang, it’s often time consuming to keep typing the build and test commands go build xx, go test xx, repeatedly. And often these commands itself may become non-trivial. Makefiles provide a very effective way to automate writing tasks for our application. Let’s understand how we can easily …

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Golang – Read JSON File

JSON (Javascript Object Notation) is a widely used format for representing data. Due to its easy-to-read format, developers often use JSON files to represent important configuration/environment variables. Apart from this, most RESTful APIs return data encoded in a JSON format, so knowing how to deal with such data can be very useful in real world …

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Golang – Iterate over a map

Hello again! In a previous discussion, we talked about using the native map container in Go. In this tutorial, we’ll be exploring more about maps in particular, by iterating through them. We’ll also have a brief overview of how this scenario changes in a multi-threaded environment as well, so keep reading for more! Now, let’s …

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Golang reflect package

Today we’ll get into a more in-depth look into a package in Go called reflect. It is on the more intermediate to advanced implementation side. In this tutorial, we’ll see what it is and how it is used. For a deeper understanding, you can also check out Implementing reflection in Reflection and Type Switching in Go.