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There are quite a few ways to create new maps and slices in Go. Which one is best? Or perhaps better asked, which one is best in your situation? Let’s take a look. Slices var varStyle []string is the idiomatic way to declare an empty slice. The slice is actually nil, which means it will … Read more Make, New and Literals Cheat Sheet – Slice and Map Initialization in Go
Sorting is a common task in programming, and for that reason most languages have a default sorting algorithm in their standard library. Go is one such language. Go has gone about providing sort functionality in one of the most elegant ways possible, via an interface. Any type that satisfies this interface can be sorted using … Read more Sorting in Go – Don’t Reinvent This Wheel
Go is strongly typed, and with that, we get many options for simple variable types like integers and floats. The problem arises when we have a uint16, and the function we are trying to pass it into takes an int. We find code riddled with int(myUint16) that can become slow and annoying to read. Go’s … Read more Don’t Go To Casting Hell; Use Default Native Types in Go
The Go standard library has a really cool type – Ticker. Tickers are used when you want to do something at a regular interval, similar to JavaScript’s setInterval. Here’s an example: As per the docs, a ticker is a struct that holds a receive-only channel of time.Time objects. In the example at the beginning of … Read more Range Over Ticker In Go With Immediate First Tick
In microservice architectures, it is fairly common to have a project that includes different worker types. A Makefile can be used to manage the creation of multiple programs, but the Go toolchain has a great tool that can be used as well, go generate. Here are some examples of how we take advantage of ‘go … Read more Using ‘Go Generate’ To Deploy Multi-Process Apps
Go is a language built for the web. The Go standard library comes with everything we need to stand up a production web server. Today we are going to explore marshaling JSON using anonymous structs. Anonymous structs can help keep API handlers clean and simple. What Is A Struct? Go’s structs are typed collections of fields. They’re … Read more Use Anonymous Structs For JSON Marshalling in Go
Go is a strongly typed language, which means at any point a developer should know exactly what type of value they are dealing with. For example, if we have a function that prints a string, we can’t just give it an integer and expect it to work. We have to cast it to a string … Read more Golang Conversions – Ints To Strings And Strong Typing
By Lane Wagner @wagslane on Twitter The paradigm of errors as a type, rather than something to be thrown and cause panics, allows for more control of how to handle “bad” state. It also forces developers to think about errors at every step. What will go wrong here? How should I handle it? There are … Read more Wrapping Errors in Go – How to Handle Nested Errors
In this article, I’m going to cover some rules of thumb for logging in go, as well as some functions you may not have heard of that can make your debugging life easier. Rule #1 – Use Errors Where Appropriate, Not Strings Go has a built-in error type, which allows developers to easily differentiate errors … Read more Logging for Gophers – Idiomatic Log Strategies in Go (Golang)
Singletons are fairly controversial as far as I can tell, especially in Javascript programming. Let’s take a look at what they are, when to (maybe) use them, and when not to. What is a Singleton? A singleton is a class that allows only a single instance of itself to be created and gives access to … Read more Singletons in ES6 – The Good, The Bad, The Ugly