Go

Variables and constants are fundamental concepts in most programming languages. They are the building blocks for storing and managing data. In this article, we’ll take a look at how variables and constant work in Go. Table of contents: What are Variables? How to Create a Variable Explicit Declaration Shorthand Variable Declaration Multiple Variable Declarations Zero Values What is a Variable Scope Naming Conventions in Go What are Constants in Go How to Declare Constants in Go Type of Constants in…

Introduction In Go, arrays and slices are data structures that consist of an ordered sequence of elements. These data collections are great to use when you want to work with many related values. They enable you to keep data together that belongs together, condense your code, and perform the same methods and operations on multiple values at once. Although arrays and slices in Go are both ordered sequences of elements, there are significant differences between the two. An array in…

Introduction In computer programming, a loop is a code structure that loops around to repeatedly execute a piece of code, often until some condition is met. Using loops in computer programming allows you to automate and repeat similar tasks multiple times. Imagine if you had a list of files that you needed to process, or if you wanted to count the number of lines in an article. You would use a loop in your code to solve these types of…

Introduction Writing flexible, reusable, and modular code is vital for developing versatile programs. Working in this way ensures code is easier to maintain by avoiding the need to make the same change in multiple places. How you accomplish this varies from language to language. For instance, inheritance is a common approach that is used in languages such as Java, C++, C#, and more. Developers can also attain those same design goals through composition. Composition is a way to combine objects…

Variables are an important programming concept to master. They are symbols that stand in for a value you’re using in a program. This tutorial will cover some variable basics and best practices for using them within the Go programs you create. Understanding Variables In technical terms, a variable is assigning a storage location to a value that is tied to a symbolic name or identifier. We use the variable name to reference that stored value within a computer program. We…

Introduction In Go, a build tag, or a build constraint, is an identifier added to a piece of code that determines when the file should be included in a package during the build process. This allows you to build different versions of your Go application from the same source code and to toggle between them in a fast and organized manner. Many developers use build tags to improve the workflow of building cross-platform compatible applications, such as programs that require…

Introduction Data types specify the kinds of values that particular variables will store when you are writing a program. The data type also determines what operations can be performed on the data. In this article, we will go over the important data types native to Go. This is not an exhaustive investigation of data types, but will help you become familiar with what options you have available to you in Go. Understanding some basic data types will enable you to…

Introduction When creating a package in Go, the end goal is usually to make the package accessible for other developers to use, either in higher order packages or whole programs. By importing the package, your piece of code can serve as the building block for other, more complex tools. However, only certain packages are available for importing. This is determined by the visibility of the package. Visibility in this context means the file space from which a package or other…

Introduction Structures, or structs, are used to collect multiple pieces of information together in one unit. These collections of information are used to describe higher-level concepts, such as an Address composed of a Street, City, State, and PostalCode. When you read this information from systems such as databases, or APIs, you can use struct tags to control how this information is assigned to the fields of a struct. Struct tags are small pieces of metadata attached to fields of a…