Java has amazing java.time package. There are few useful classes like LocalDateTime, ZonedDateTime, Instant or Clock. But do you know how to use them? If you are using untestable Instant.now() syntax - you probably should read this post.

Every time you visit a website your web browser uses the HTTP protocol to communicate with web server and fetch the page’s content. Also, when you are implementing backend app and you have to communicate with other backend app - 80% (or more) of cases you will use the HTTP.

I’ve been the software developer for several years now. But in this profession there was still an area in which I had exactly 0 experience - gamedev. I know I can watch tutorials about the Unity and build 3d games in two weeks. But to tell you the truth - it’s not what I like. I like to know how it exactly works, not only how to use the framework.

This is not a post from the series of those describing the cd command. It’s just a list of commands and tricks I’m using (almost) every day.

First we need to learn something about PEG. In short PEG is standard to describing a language. But it is still only a formal grammar. We need a parser. Huh, very complicated, isn’t it? So what do we need? A parser generator of course! You can use for example Neotoma, very good, well documented parser generator for PEG grammar. Installation instruction you can find on project GitHub, but you can also use plugin for Rebar3.