[carapace]

"If <FOO> is so amazing, why doesn't everyone use it?" has got to be one of my least favorite questions. Never mind that it's lazy (in a bad way), it presupposes that people automatically adopt the best available technology or whatever, which is obviously false. But I think the thing that bothers me the most is that, asked with a different attitude and intent, it's usually a good question.

E.g. Lisp is so much better than pretty much every other programming language (except maybe APL) that it truly is bizarre and therefore interesting that it doesn't get wider adoption. (I don't even use it, despite having such a near-worshipful attitude towards it.)

[treadmill]

>Lisp is so much better than pretty much every other programming language

>I don't even use it, despite having such a near-worshipful attitude towards it.

How do you know that it is so much better then?

[carapace]

In a word, extrapolation. I hope I don't sound too ridiculous, here on Hacker News, but I've kinda devoted my life to computer programming (it's deeper than that, and there's a lot of other stuff going on, but to a first approximation, that's a true statement.) I used to joke that I was reserving a bank of brain cells for that day when it was time to learn Lisp. When that day finally came, I was well prepared and grokked it mildly, but enough to become angry when I saw all the time and energy that has been wasted due to non-use of Lisp. I literally stomped around the house for twenty minutes cussing!

Anyway, I know this is "argument from authority" by some rando on the Internet, so I don't expect you to take it seriously. :)

[noloblo]

What about haskell and erlang how does lisp compare to these heavy weights?

[Atlas22]

Erlang is largely a different kind of niche than Haskell and lisp. Its more focused on distributed and reliable processing than more general purpose. In effect its the Actor model taken to the extreme. Where I'd categorize Haskell and lisp more general purpose but they take different approach. Lisp the more "keep it simple" approach and Haskell the high theory approach. I've yet to encounter someone that claims expertise in haskell that isn't obviously lying or delusional as it is probably the largest language feature wise. I've been learning it for years but still have yet to find the "target use case" that it is the best tool for the job. It certainly is worth learning about even if only for the new perspectives on problems it encourages.

At least in my opinion: Lisp is amazing for its simplicity and homoiconicness and the great powers that come with those. Erlang is amazing for its approach to distributed computation and reliability. Haskell is amazing for at least its theory, and probably more I'm not yet aware of.