Qvault.io – Coding courses to launch your tech career
Learn how to write maintainable, readable, clean code. The same algorithm can be written in many different ways. Learn to write code in such a way that your co-workers love to work with you on projects!
In Go, we often need to return zero values. Idiomatic Go encourages the use of guard clauses, and guard clauses necessitate the need to return early. When returning early with an error, by convention all other return values should be zero values. The confusion arises with data types like maps and slices. Should maps and … Read more
My team at Qvault has been spending less of our “free” time working on bugs and features from the backlog, and more time refactoring our codebases and test suites. As a result, and perhaps somewhat counterintuitively, we’ve noticed a significant increase in our throughput of features and bug fixes. As it turns out, its easy … Read more
We can’t optimize for everything in software engineering, so we need to start with something, and that something should be simple code and simple architecture. For example, to over-optimize for speed in JavaScript, we might write our for-loops backwards to the detriment of readability. I believe we should optimize for simplicity first, and only make … Read more
There are quite a few ways to create new maps and slices in Go, for example, they can both be initialized using the make or new functions, as literals, or using the var keyword., but which option is best? Or perhaps better asked, which one is best in your situation? Let’s take a look. Slices … Read more
Have you ever had the problem where you submit a pull request and the diff is much bigger than it should be? Perhaps the code looks identical but GitHub is telling you that it’s all different? This is typically due to a difference in line endings, primarily the difference of LF vs CRLF. Unix systems … Read more
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 sorting functionality in one of the most elegant ways possible, via an interface. Any type that satisfies this interface can be sorted using … Read more
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. In … Read more
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
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
An anonymous struct is just like a normal struct, but it’s defined without a name, and as such can’t be referenced elsewhere in code. Structs in Go are similar to structs in other languages like C. They have typed collections of fields, and are used to group data together in order to make it more … Read more