Or Perl, or C. After all, even PHP was once a new hipster language.

Of course, it's good to be skeptical of the current hyped flavor of the moment. But some languages really are better than others for specific tasks, and new languages do sometimes improve on their predecessors.

C is still the choice language for many things. Perl is still cool to me, though seems to have been replaced by Ruby for web development.

Ironically enough, given the recent improvements, performance and productivity...that's not really out of the question...

What is star fighter written in? Curious, no bad intentions.

Go, Ruby, and React.

IIRC, it's got some Go infrastructure and the trading chapters have bots written in Ruby.