C because there's a ton of code to learn from. And if something I see seems weird I can apt-src it.
probably rust, brainfuck, with a sprinkle of fortran77
C was my first language and every day I thank my past self for learning it -- even if I chose it because I didn't know of any other languages. That said, I can't think of any single language where I find myself constantly in appreciation of its design, and having the ability to express myself effortlessly. I think, if anything, I tend to have favourite libraries and frameworks. For example, Redux eases so many of my front-end complaints, and does so in a beautiful way.
😏 Yt L.
I love JS and TypeScript, be it through Node.JS, Deno, or the browser, because I've never not been able to get something done with it. My second favorite would be C#.NET Core, for my current jobs. Anyone who wants something like Java without all the crust, take a look at C# with .NET Core. It's got a lot of refreshing features and built-in async, await, Promises (Tasks) just like JS, far easier to setup a project, and doesn't necessarily need a heavy weight IDE.
Ruby because of its simplicity, it's elegant and flexible.