Golang Project Structure

Tips and tricks for writing and structuring Go code



How to Test Code in Go

A health worker in a laboratory is performing a medical test using high-tech scientific equipment.

Testing should be considered an essential part of the software-development process, because it helps to ensure that our code works as expected when handling a wide range of reasonable values as input. So today we are going to look at how to write tests in Go, using the built-in syntax, and how to run the […]

Overview of JavaScript Promises

Two girls performing a "pinky promise" ritual with their hands.

Have you ever found yourself writing JavaScript code that becomes difficult to read because there are so many nested callbacks? Or do you get frustrated when your browser becomes unresponsive as it struggles to perform long-running operations in client-side code? Well, promises are designed to solve those problems! In this post we will discuss exactly […]

How to Make Go Structs More Efficient

A small yellow car is shown in a huge parking space. Either side of it are two huge white buses.

It may be surprising to learn that two Go structs can contain exactly the same fields and yet one can require more — or less — memory than the other. Since we generally want to ensure that we never use more memory than required, we are going to look at a technique called structure packing […]

Cheat Sheet for the Vim Text Editor: Commands and Keys

The Vim text editor running on the Windows operating system.

Not everyone likes to write code using impressive IDEs. Many experienced programmers prefer to use the old-school Vim text editor, which runs natively in the Linux terminal. There are also versions available for Windows and MacOS. Although Vim has a reputation for being intimidating to new users, it offers an incredible degree of control and […]

Guide to Printing to the Console in Go

A row of wooden letters spelling out the word "format".

Most programs will need to emit some kind of output if they’re going to be useful to the people using them. So today we will look at the various ways to print content to the console in Go, focusing on four related functions in particular. Introducing the Fmt Package The Go standard library’s functions for […]

Did You Know That Slices in Go Can Take Three Indices?

Three cute cats sitting in a row.

I’m going to show you a little snippet of syntax today that even many experienced Go programmers may not be aware exists, which involves performing an operation on an array or slice with the use of three different indices. We’ll look in more detail at this special syntax that’s used in a slice-indexing operation below. […]

Rob Pike’s Go Proverbs (Part One)

This post is the start of an upcoming three-part series which will explain twelve Go proverbs. In this context, the word “proverb” is just used as a fancier term for a “short, snappy saying”. The proverbs that we’ll be discussing come from a talk given by Rob Pike in the early days of Go. Rob […]

How to Check Whether a File Exists or Not With Go

There is no single function in the Go standard library that will return a boolean value set to true if a given file or directory exists, based on a given path, or false if it doesn’t. Some people may argue that such a function should have been provided, especially since other popular programming languages have […]