If you’ve done your first go tutorial, it probably went something like this: fmt.Println("Hello World!") // Hello World! However if you try to use Println on something more complex than a string, you may get surprising results. type person struct { name string age int } fmt.Println(person{name: "Alice", age: 30}) //{Alice…

It’s been a while since I’ve been able to do anything on the pomodoro project. In the previous article we added “quiet times” to our app so that we wouldn’t get audible alerts during certain time windows. Now we have an application which will follow this pattern: 1. Count down from…

At first glance Golang appears to dislike having any sort of folder structure. This is because code is automatically shared within the same project. Let’s say we have two files as follows: //main.go package main import "fmt" func main() { result := calculateTotal(1,3) fmt.Println(result) //4 } //calculate.go package main func…

My previous article spoke about Marshalling JSON into a Go type. Let’s look at how you can do the opposite — Unmarshalling type person struct { Name string `json:"First name"` age int } func main() { j := `{"First name":"Mike","age":25}` p := person{} json.Unmarshal([]byte(j), &p) fmt.Println(p) // {Mike 0} } …

Go has a really nice way to convert to JSON. To convert from a Go type to JSON is called marshalling. Let’s look at an example: type person struct { Name string } func main() { m := person{Name: "Mike"} mj, _ := json.Marshal(m) fmt.Println(string(mj)) //{"Name":"Mike"} } Here you can…

Most new years resolutions are outcome based, and often they’re such a large shift from what you’re currently doing — If you’re not enjoying the extra podge on your tummy that you picked up over the holidays, you might have made a goal like “Exercise for an hour every day” or “do 100 crunches every day”. Going from couch potato to these extremes is going to be incredibly difficult. Give…

With just having had the most expensive part of the year, and starting a new one, many of us may be thinking about doing better with money in 2022 — Why? The first thing to consider is how you want to make use of money in the longer term. This can look different for everyone, but here are some common themes: Save up to buy a house Pay off mortgage or student loan debt Replace some or all of your current…

The three-dot ... notation can be used in a few places: To specify length when creating array literals arr := [...]string{"One", "Two", "Three", "Four", "Five"} fmt.Println(len(arr)) // 5 Note that this creates an array with a fixed length, not a slice. So methods like append this will not work. Variadic Functions This is a function that can take any…

Named return values are exactly what they sound like. Instead of just having a return Type on your function, you can actually name the value that is being returned. Let me show you with a simple example: func sumValues(vals []int) (total int) { for _, v := range vals…