For me, it's python and node.js (backend javascript). I feel like those are two languages that are everywhere these days. I'd also love to get into websockets or server-sent events to replace the long polling PHP chat we currently have going on (eek).

A couple of years ago, I tried playing with SSE (text/event-stream MIME type) and for some reason I couldn't get it to work despite following every tutorial out there. I think that it must be something about the way our nginx servers are configured perhaps?

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That would be web programming. For me it's not a matter of time. Being retired I have plenty of that. It's a matter of developing a skill that would be of no use. Like learning French or Spanish that I would never get to use.

I wish I was better at Maths. I feel like there's a whole world of knowledge in there that I just have no clue about.

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