When to and when not to panic! — Rust has a very efficient error handling mechanism that doesn’t compromise readability. You will learn when to panic! and how to deal with the Result<T, E> in a practical and approachable way. I wrote about error handling in Go about 4 years ago and it’s pretty well received. This article…

I’m a father of two boys. One is super energetic, and another one is brand new. My wife and I both have full time jobs. As you can guess, I don’t have much time for myself. My me time begins after 10 PM everyday when everyone goes to bed, and…

Polymorphism is one of the key concepts in programming languages. There are several kinds of polymorphisms such as ad-hoc polymorphism, parametric polymorphism, subtyping polymorphism, and a few others. In this article, we will mainly focus on ad-hoc polymorphism which relies on function overloading or operator overloading. This article is about…

I remember the good old days when we geocities together. Are you using Linkedin? As you know, Linkedin is a professional network and their platform is great for connecting people (professionally). I have more than 500+ connections and more than a half are the people that I don’t know or…

An in-memory cache is a crucial component in a modern software architecture. It can improve the throughput of a system. As a result, the user experience is increased while the operating cost is decreased due to efficient resource usages. The well-known open-source in-memory caches are Redis and Memcache. The latter…

Go doesn’t have exceptions, so it doesn’t have try…catch or anything similar. How can we handle errors in Go then? There are two common methods for handling errors in Go — Multiple return values and panic. Error Handling using Multiple Return Values We can take advantage of multiple return values feature by adding an error struct…

Let’s go over some configuration formats that most of us may be familiar with. Talking about the good old days (not really sure about “good” though), the de-facto standard configuration format in Java was properties. Wait.. This historic configuration format is still widely used nowadays. The parser (a.k.a. java.util.Properties, a.k.a…

Nobody can prove what happens after death. Do we have a soul? Or it’s just an eternal oblivion or nothingness. It’s quite intuitive to think that our thought and emotion are just a chemical reaction in our brain. If you lose all memory, are you still you? …

Scalatest 3 comes with a cool feature, Async Test. It lets you assert your future value in asynchronous fashion. It sounds good, but you should use it with caution because it works only when the future assertion is the last statement of the test block. test(“Aysnc Test”) { …