Sometimes you want to read a file that contains many lines of text or a list of structured data and you want to process each line individually, rather than working with the entire content of the file at once. This post will discuss various ways to read a file line by line, looking first at […]

This post will explain what hash functions are and how they’re used. We will then go on to look at some examples of hashing algorithms in Go code. Finally, we will look at importing external packages that export hash functions, including from the standard library. What Is a Hash Function? A hash function takes data […]

Slices are one of the most important data structures used in Go. In this post, we will look at how to concatenate slices. We will start by explaining the general concept of concatenation, then we will look at examples of concatenating two or more slices in Go. Finally, we will build functions that can help […]

This post will discuss the various ways to add elements to a slice. Appending an element adds it to the end of the slice, whereas prepending it adds it to the beginning of a slice. It is also, of course, possible to add an element at any position in between. We will finish by looking […]

When an image is pixelated, it has a visual effect applied to reduce its level of detail through the use of many same-sized blocks, each painted with a single colour. Each of those blocks can be thought of as a large pixel (since a pixel is the smallest unit that can contain a colour in […]

It’s reasonable to look at a picture and to wonder how it might look if it were distilled down into a single colour, which somehow still encapsulates a sense of the original. In this post, we will look at various methods that can be used to calculate the average colour of an image in Go, […]

For the past six years, Google has run an annual Go Developer Survey in order to understand more about what the community thinks and how it feels about recent changes to the language. The survey also helps to keep us informed about any problems or concerns that have arisen and gives us an opportunity to […]

I’ve written in the past about how to reverse the order of all the elements in a slice, but today I’m going to discuss some of the ways that elements can be removed — in other words, deleted — from a slice in Go. When looking at the various ways to remove one or more […]