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Factor!
It's incredible and elegant and defies some common categorization.
I've put some of my favorite resources in the sidebar of https://programming.dev/c/concatenative and I'm happy to walk through any particular challenges/examples -- I've done about the first week of Advent of Code with it this year, and the most recent handful of Perl Weekly Challenges, and some basic Euler problems.
Re the sidebar: How are Nim and Roc partially concatenative?
I may be expressing it poorly and inaccurately, but what I mean is that in Nim you can re-order arguments and functions to start with some data followed by a series of transformations. The following two lines are equivalent:
parse_int(read_line(stdin))
stdin.read_line().parse_int()
Roc offers a similar flow with their |> operator. Here's a snippet from one of my Advent of Code 2022 solutions:
partOne =
"input.txt"
|> getData
|> Task.await \data ->
data
|> getRangePairs
|> List.keepIf pairHasStrictSubset
|> List.len
|> Num.toStr
|> Stdout.line
That’s true, but if the transformations have more than one argument, they go after the name:
data.split(",").join(";")
as opposed to concatenative programming languages, where all arguments go before the name and there’s no visual indication of the structure:
data "," split ";" join
Also, there are more languages with this feature, for example D, VimScript or Koka.
That’s true, but if the transformations have more than one argument, they go after the name
Yup, I understand. That's why I've not put them in the concatenative section.
Also, there are more languages with this feature, for example D, VimScript or Koka.
Thanks, maybe I'll add them to the sidebar! I hadn't heard of Koka.
If you have a suggested heading/description to replace "partially concatenative" I'm interested. Function chaining? And I'm not sure but maybe execline is actually concatenative and needs to be moved out of that section.
I think “uniform function call syntax” is the established term for this particular feature.
Thanks. I know that's the case for Nim's flexibility, but I didn't think it applied to the pipe operator stuff like in Roc. I'll do some reading tonight to confirm.
I love C#, but F# is also super fun and worth checking out.
Qt is an amazingly good C++ framework that encourages a much safer approach to using the language that emphasizes const refs over pointer insanity.
Also, the library function are quite powerful.
If you want something that feels more quirky, go with Lisp.
I've been having a lot of fun with scheme lately (specifically guile, but I don't think it matters much). It's a very stripped down language compared to common lisp, so I felt it was easier to get started with.
If you haven't done any Clojure, may be Elixir?
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I like Scala:
Fwiw, here's my interactive climate system model running in pure scala.