Promise is a language feature for asynchronous programming in JavaScript. Today we see the basic syntax which will get you running while you learn more on the go.

Like most of the self-taught programmers, I spent a lot of my years dabbling with different technologies. But there comes a time in every programmer's life when they have to learn data structures and algorithms to proceed in their careers. In this post I will go through the basics of data structures, what purpose they server and what's common between all of them.

In this post I have gone through and collected events related to HTTP and it's gradual development.

Are you lost between Handle, HandleFunc, and HandlerFunc? If the answer is yes then this post is for you. To understand these pretty well we need to be familiar with interafces. Although `interface` is just a keyword, it's confusing at first when you are switching from Python like language; which does not have a similar keyword.

Introduction The way we used to deliver resources to the client in a server-client setup is now drifting away from REST to a more modern delivery mechanism. Two of them are gRPC and GraphQL. While both these solve a different kind of problem, REST is going to stay for a while. It is the simplest to learn at least. You might have seen job descriptions requiring skills like the ability to design RESTful API.

Introduction From The Zen of Go: If you think it’s slow, first prove it with a benchmark Don’t assume if things are slow. Benchmark it and see if they are really slow. One thing to note here is benchmarking a program is different from profiling a program. Benchmarking is the way we check how fast our algorithm is for a given unit of the program. In benchmarking, we typically see how many iterations can a piece of code can run in a given time.

The internet is filled with Go learning resources. And I am not going to repeat all the links here. I will list only the resources that I went through. I am a self-taught programmer from start. And have limited knowledge of computer science. Which of course is changing day by day. I had a background in Python before getting into Go. So my recommendations will also be aligned with my experience level.

Introduction In last post we learned how we can use functional options to pass parameter to our functions. In this post we’ll see an alternative way to do the same thing. I’ll take the same code from the last post to keep things simple. Variadic Functions for Options 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 type Coffee struct { CoffeeBeans bool Sugar bool SteamedMilk bool } func New(opts .

Introduction In Python you can assign default value to the functions, like so: 1 2 def my_func(posarg, named_arg=True, another_named_arg="Okay") # logic goes here... But in Go you can’t do this: 1 2 3 func myFunc(posarg, named_arg bool = true, another_named_arg string = "Okay") { // logic goes here... } This will throw a syntax error. Try that? In this post, we’ll see how can we overcome this issue the go way, with something called Function Options.

Introduction Send a POST request in golang is pretty daunting if you have a post body and you’re coming from a scripting language like JavaScript or Python. Here in Go, schema for JSON needs to be defined beforehand in order to marshal and unmarshal string back and forth to JSON. Simple POST This marshaling/unmarshalling could be an oneliner if your request body is not nested, or is one level deep, or there is not even a body.

Introduction Have you ever ran into a situation where you wanted to version your application, but doing git tag and making a separate commit for updating version number was a two-step process? Isn’t that kinda frustrating? You can even miss to update the version number in your code, which happens to be with me a lot. In this post we’ll see how to convert this two-step process into one. Contents:

I will start this post with a quote from webassembly.org: WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable target for compilation of high-level languages like C/C++/Rust, enabling deployment on the web for client and server applications. webassembly.org blockquote p { padding: 15px 15px 0; } That’s a lot of technical jargon. In very simple terms,

In a previous post we discovered how can we run commands on each push and check if the test is passing against multiple versions of go. This is a continuation of the same concept. We are going to deploy our code to Elastic Beanstalk, straight from git push. Elastic Beanstalk is nothing but a wrapper around it’s EC2 infrastructure. It is a developer-centric view of deploying an application on AWS. Developers just have to push the code and Beanstalk can take care of Auto Scaling Group, Elastic Load Balancer, databases etc.