I like C/C++. As for dislike I told that was a time where I supposed to work with Lua and I wasn't very happy to work with Lua, but in fact I didn't write anything in Lua so it was just about feelings. Also I told that was a time when I write application with swift 3. After finishing some part of the project I update it to swift 4. And what I disliked that after upgrade I should have had fixed a lot of swift 4 update issues.