magrittr VS jq

R (yes, the statistics language) has exactly this.

You can literally extract the body of a function as a list of "call" objects (which are themselves just dressed-up lists of symbols), inject/delete/modify individual statements, and then re-cast your new list to a new function object.

I don't know why the original devs thought this was necessary or even desirable in a statistics package, but it turns out to be a lot of fun to program with. It has also made possible a wide variety of clever and elegant custom syntaxes, such as a pipe infix operator implemented as a 3rd-party library without any custom language extensions [0]. The pipe infix operator got so popular that it was eventually made part of the language core syntax in version 4.1 [1].

[0]: https://magrittr.tidyverse.org/

[1]: https://www.r-bloggers.com/2021/05/the-new-r-pipe/

In R (thanks to magrittr) you can now perform operations with a more functional piping syntax via %>%. This means that instead of coding this:

Try reading the documentation for magrittr.

Related note: the statistical programming language R has a library named magrittr to support the pipe operator.

About the pipe (%>%) symbol, it's provided by the magrittr package. The package documentation details how to use the pipe operator.

I was wondering what some good ways are to handle nested function calls without chaining them in long, ugly nested statements. I am looking for functionality similar to the pipe forward operator %>% in magrittr/R or |> in F#.

You may like R: https://magrittr.tidyverse.org

Agreed on everything else you said (especially the type safety stuff, it massively helps in production), but one correction: magrittr is absolutely in the tidyverse suite. It's not considered one of its "core" packages that it visibly tells you it loads, but magrittr is loaded when calling library(tidyverse) and development of the package is handled by the tidyverse team under their Github account: https://github.com/tidyverse/magrittr

That should recursively list directories, counting only the files within each, and output² jsonl that can be further mangled within the shell². You could just as easily populate an associative array for further work, or $whatever. Unlike bash, zsh has reasonable behaviour around quoting and whitespace too.

¹ https://zsh.sourceforge.io/Doc/Release/User-Contributions.ht...

² https://github.com/jpmens/jo

³ https://github.com/stedolan/jq

What I miss from jq and what is implemented but unreleased is platform independent line delimiters.

jq on Windows produces \r\n terminated lines which can be annoying when used with Cygwin / MSYS2 / WSL. The '--binary' option to not convert line delimiters is one of those pending improvements.

https://github.com/stedolan/jq/commit/0dab2b18d73e561f511801...

If you have jq installed you can use it to make the output look nicer.

It requires jq for JSON processing and GNU parallel for concurrent searches in the notebooks.

jq is your friend.

The jq command (https://stedolan.github.io/jq/) is useful pulling that information out.