ClojureRS – Clojure interpreter implemented in Rust(github.com)
github.com
ClojureRS – Clojure interpreter implemented in Rust
https://github.com/clojure-rs/ClojureRS
42 comments
Clojure isn't pitched to be a toy language. The sell is that it is making a great many really thoughtful design choices that add up to a pleasant language.
The reason Clojure Classic is hosted on the JVM is because Rich wanted access to the Java ecosystem (and probably because the JVM is an awesome piece of tech). If ClojureRS follows the same mentality, the point here is someone wants to program in Clojure but have access to the Rust ecosystem.
From this perspective it is clear why they'd avoid taking a small-subset approach with a possible performance hit. This isn't a tour of force showing how great Clojure is & how clever someone is that they can implement it on Rust. The idea is to get work done, using Clojure, which may need access to Rust's libraries. It doesn't need to be elegant, that isn't especially important.
The reason Clojure Classic is hosted on the JVM is because Rich wanted access to the Java ecosystem (and probably because the JVM is an awesome piece of tech). If ClojureRS follows the same mentality, the point here is someone wants to program in Clojure but have access to the Rust ecosystem.
From this perspective it is clear why they'd avoid taking a small-subset approach with a possible performance hit. This isn't a tour of force showing how great Clojure is & how clever someone is that they can implement it on Rust. The idea is to get work done, using Clojure, which may need access to Rust's libraries. It doesn't need to be elegant, that isn't especially important.
I appreciate this comment, as it answers the exact question I had in my head. I was actually wondering what the point of implementing a JVM-based language in another language was, but this sums it up nicely. As a Java (and Clojure) developer, Clojure makes perfect sense to me and I love the inteop capabilities because I know the Java ecosystem. ClojureRS would therefore make a lot sense to a Rust developer.
Actually as mentioned in another comment, I believe I did at least think about it, even if not for this project. However I believe I went in another direction
For ClojureScript a lot of the data-strucutres and other parts of the language were rewritten in Clojure.
So bootstrapping is now easier.
That said, you likely would want native data-structure instead of interpreted code that implements them.
So bootstrapping is now easier.
That said, you likely would want native data-structure instead of interpreted code that implements them.
Most Scheme implementations also implement core data structures natively rather than in Scheme. They could be implemented in Scheme, as it could in most languages, but they ren't for the sake of efficiency.
What I still continue to find interesting is that Idris2 compiles to Chez Scheme, and is somehow faster than Idris1 which compiled to C. The Chez Scheme implementation very much natively handles all important data structures.
What I still continue to find interesting is that Idris2 compiles to Chez Scheme, and is somehow faster than Idris1 which compiled to C. The Chez Scheme implementation very much natively handles all important data structures.
> But wouldn't it make more sense to first rewrite Clojure itself in some small/minimal scheme-y subset of Clojure - and then port that subset to Rust/Dart whatever? (With some performance penalty)
Actually indeed I think this is a possible route I went or have a note to try somewhere. The idea being if we can make a very lean Clojure core, and then the std library built upon that instead, it should be easier to port to other systems and share code. Gets tricky of course once you deal with code that relies at all on any sort of interop somewhere, but I should probably not get too much into it as my heads not been in that space for a while haha. The idea of a unified, universal Clojure of some sort (whether possible and practical or not) is an interesting problem in all this
Actually indeed I think this is a possible route I went or have a note to try somewhere. The idea being if we can make a very lean Clojure core, and then the std library built upon that instead, it should be easier to port to other systems and share code. Gets tricky of course once you deal with code that relies at all on any sort of interop somewhere, but I should probably not get too much into it as my heads not been in that space for a while haha. The idea of a unified, universal Clojure of some sort (whether possible and practical or not) is an interesting problem in all this
I wonder how many partial implementations of clojure are out there targeting different runtimes. I recently ran into the fennel cljlib which is not quite the same idea but definitely close.
Not that any of these are the individually the wrong choice at all. It does suggest a lot of duplicated work, but I also get the sense that each's goals are different enough they maybe don't have as much overlap as it's easy to assume.
Not that any of these are the individually the wrong choice at all. It does suggest a lot of duplicated work, but I also get the sense that each's goals are different enough they maybe don't have as much overlap as it's easy to assume.
Gentle reminder, there is also ClojureCLR.
https://github.com/clojure/clojure-clr
https://github.com/clojure/clojure-clr
Most of Clojure is implemented in Clojure, it's not the most minimal of all Lisp, but relatively speaking compared to a lot of programming languages it is still quite minimal.
Maybe it's a bit naiive, but I'd imagine having a small-core interpreted Clojure and different host implementation would incrementally overload functionality and reimplement using the host's features.
But the design (granted I'm judging from the docs and API - not digging through the source) seems like things weren't designed for multiple hosts in mind.
But the design (granted I'm judging from the docs and API - not digging through the source) seems like things weren't designed for multiple hosts in mind.
I'm not really sure what you're imagining, but basically you need to implement the few special forms, the general rules of parsing and evaluation, and then you need to implement all the core types, and finally you need to bring in all the core data-structures and standard library functions.
A lot of the standard library functions are already written in Clojure itself, and don't use interop, but a lot of them, as well as types, and core data-structures are implemented in Java, and core functions that uses them tend to use interop. So that stuff needs to be ported as well.
And that's about it.
Now, you might think it would be great if all the types, data structures and therefore all core standard functions could also all be implemented in Clojure on top of the special forms. But I actually think it's specifically because that's not the case that Clojure gets ported to so many hosts.
The special thing is that this design makes Clojure hosted, which is very different from simply being implemented over multiple hosts.
For example, Clojure always uses the host's native types. So Clojure types are the same as the host it is running on. That's why then interop becomes a first class thing, and why Clojure always feels very symbiotic and compatible with the host.
And because it uses the host's native types, it also can't implement it's core data-structures and some of its core standard functions without using interop. Which is why those need to be re-implemented to be host specific normally.
I think there's a few extra things you could lift to be in pure Clojure, and I think Clojurescript has lifted more of them to be so, but still the types are same.as the host.
If this wasn't part of the design, the appeal of porting it would also be lost. It would just be like a bunch of exactly same Clojire language just with various quality of implement and performance characteristics, and people would probably just pick the ine that has the best performance and most stable.
But instead, Clojure becomes an alternate language for a multitude of hosts. Suddenly it means you can use Flutter as easily as with Dart, but have Clojure as your language to do so. It means you can use NodeJS as easy as with JavaScript, but using Clojure as your language, etc.
It's also why it's a bit wrong to say Clojure gets ported to other hosts, in reality it doesn't, what happens is someone creates a new dialect of Clojure that is well adapted to a new host. And that's also why it's so useful.
A lot of the standard library functions are already written in Clojure itself, and don't use interop, but a lot of them, as well as types, and core data-structures are implemented in Java, and core functions that uses them tend to use interop. So that stuff needs to be ported as well.
And that's about it.
Now, you might think it would be great if all the types, data structures and therefore all core standard functions could also all be implemented in Clojure on top of the special forms. But I actually think it's specifically because that's not the case that Clojure gets ported to so many hosts.
The special thing is that this design makes Clojure hosted, which is very different from simply being implemented over multiple hosts.
For example, Clojure always uses the host's native types. So Clojure types are the same as the host it is running on. That's why then interop becomes a first class thing, and why Clojure always feels very symbiotic and compatible with the host.
And because it uses the host's native types, it also can't implement it's core data-structures and some of its core standard functions without using interop. Which is why those need to be re-implemented to be host specific normally.
I think there's a few extra things you could lift to be in pure Clojure, and I think Clojurescript has lifted more of them to be so, but still the types are same.as the host.
If this wasn't part of the design, the appeal of porting it would also be lost. It would just be like a bunch of exactly same Clojire language just with various quality of implement and performance characteristics, and people would probably just pick the ine that has the best performance and most stable.
But instead, Clojure becomes an alternate language for a multitude of hosts. Suddenly it means you can use Flutter as easily as with Dart, but have Clojure as your language to do so. It means you can use NodeJS as easy as with JavaScript, but using Clojure as your language, etc.
It's also why it's a bit wrong to say Clojure gets ported to other hosts, in reality it doesn't, what happens is someone creates a new dialect of Clojure that is well adapted to a new host. And that's also why it's so useful.
Thanks for the insight. It seems to match my understanding
Correct me if I'm wrong, but you don't typically interact with the host directly when using core data structures. If you were to rewrite those for instance in terms of lists (like you'd probably do in a Scheme) I don't think that that change would be visible to the user from pure Clojure code. And similarly for the standard library. Then host to host you could re-implement them with whatever data structures you want.
This would in principle make adding and then maintaining a new host significantly easier
As for the types, are you speaking about how numbers are Longs/Doubles, and arrays are Java Arrays? And that matches what Java uses - so things work smoother (except when you get a BigInt..)？ I get what you say about changing that host to host improves the coupling - but you loose the ability to share libraries which is a shame - hence why you say `dialect`. I guess if you write a Clojurefoo for a new host that normally uses Ints and Floats then it's a design choice if you want it to match the Host or to match Java. If Java is close enough I can see it making sense to create a compatibility layer and have users deal with whatever friction ensues..
From my own limited experience, host interop is super important and a huge part of why I used Clojure. Calling out to Java libraries saves me zillions of hours of coding. But the actual interop code is also not a huge fraction of the code I write. If it were a bit more complex on a different host b/c I needed to fiddle with some typeas I don't think this would be a deal breaker. On the other hand, not having access to all of Clojure's libraries would be a disaster
I wish I knew this stuff a bit more thoroughly to discuss it more concretely :)
Correct me if I'm wrong, but you don't typically interact with the host directly when using core data structures. If you were to rewrite those for instance in terms of lists (like you'd probably do in a Scheme) I don't think that that change would be visible to the user from pure Clojure code. And similarly for the standard library. Then host to host you could re-implement them with whatever data structures you want.
This would in principle make adding and then maintaining a new host significantly easier
As for the types, are you speaking about how numbers are Longs/Doubles, and arrays are Java Arrays? And that matches what Java uses - so things work smoother (except when you get a BigInt..)？ I get what you say about changing that host to host improves the coupling - but you loose the ability to share libraries which is a shame - hence why you say `dialect`. I guess if you write a Clojurefoo for a new host that normally uses Ints and Floats then it's a design choice if you want it to match the Host or to match Java. If Java is close enough I can see it making sense to create a compatibility layer and have users deal with whatever friction ensues..
From my own limited experience, host interop is super important and a huge part of why I used Clojure. Calling out to Java libraries saves me zillions of hours of coding. But the actual interop code is also not a huge fraction of the code I write. If it were a bit more complex on a different host b/c I needed to fiddle with some typeas I don't think this would be a deal breaker. On the other hand, not having access to all of Clojure's libraries would be a disaster
I wish I knew this stuff a bit more thoroughly to discuss it more concretely :)
> If you were to rewrite those for instance in terms of lists (like you'd probably do in a Scheme) I don't think that that change would be visible to the user from pure Clojure code
You could probably, but persistent thread-safe data-structures are a bit non-trivial to implement. And I'm not even sure you can build them atop a simple list, and even if you could, definitely they would neither be performant nor memory efficient.
I think it would be a cool project to have a kind of Clojure implemented over a more minimal core, like an implementation of the data-structures over a simple array or something, but it also wouldn't really be practical in usage I believe.
> This would in principle make adding and then maintaining a new host significantly easier
It would, but I wonder if it would just encourage toy implementations. In some ways, now it forces you to re-implement from the get go all the pieces that matter for performance and efficiency.
> As for the types, are you speaking about how numbers are Longs/Doubles, and arrays are Java Arrays? And that matches what Java uses - so things work smoother
Yup, numbers, strings, regexes, threads, namespaces, they're all host specific. Namespaces are particularly important, you want a Clojure namespace to be a module of the host.
Having the same types makes interior a lot smoother, and also it makes implementing Clojure to a new host a lot easier as well, because building custom primitive types over an existing runtime is non-trivial.
> but you loose the ability to share libraries which is a shame
That's why you've got reader conditionals, so you can still technically implement portable libs, though it does force you to re-implement the parts that differ as the library author.
But this is a tradeoff, either reusing the host libraries is trivial and easy, or reusing Clojure's would be. I'd say 90% of the appeal of Clojure on a new host is leveraging the new host's libraries, so I think Clojure makes the right trade off here.
And the IO pieces you'd always have to reimplement as well. And because of Clojure generally using interop for that, the person who ports Clojure also has less to re-implement, since users can just use interop.
> On the other hand, not having access to all of Clojure's libraries would be a disaster
How many of those libs are interop free though? Because otherwise you'd always lose access to them anyways.
You could probably, but persistent thread-safe data-structures are a bit non-trivial to implement. And I'm not even sure you can build them atop a simple list, and even if you could, definitely they would neither be performant nor memory efficient.
I think it would be a cool project to have a kind of Clojure implemented over a more minimal core, like an implementation of the data-structures over a simple array or something, but it also wouldn't really be practical in usage I believe.
> This would in principle make adding and then maintaining a new host significantly easier
It would, but I wonder if it would just encourage toy implementations. In some ways, now it forces you to re-implement from the get go all the pieces that matter for performance and efficiency.
> As for the types, are you speaking about how numbers are Longs/Doubles, and arrays are Java Arrays? And that matches what Java uses - so things work smoother
Yup, numbers, strings, regexes, threads, namespaces, they're all host specific. Namespaces are particularly important, you want a Clojure namespace to be a module of the host.
Having the same types makes interior a lot smoother, and also it makes implementing Clojure to a new host a lot easier as well, because building custom primitive types over an existing runtime is non-trivial.
> but you loose the ability to share libraries which is a shame
That's why you've got reader conditionals, so you can still technically implement portable libs, though it does force you to re-implement the parts that differ as the library author.
But this is a tradeoff, either reusing the host libraries is trivial and easy, or reusing Clojure's would be. I'd say 90% of the appeal of Clojure on a new host is leveraging the new host's libraries, so I think Clojure makes the right trade off here.
And the IO pieces you'd always have to reimplement as well. And because of Clojure generally using interop for that, the person who ports Clojure also has less to re-implement, since users can just use interop.
> On the other hand, not having access to all of Clojure's libraries would be a disaster
How many of those libs are interop free though? Because otherwise you'd always lose access to them anyways.
okay, i think we understand each other. It's an interesting thought experiment. And you're right that probably the majority of Clojure libs do involve interop. Thanks for taking the time to write :)
> But wouldn't it make more sense to first rewrite Clojure itself in some small/minimal scheme-y subset of Clojure
How about Scheme?: https://github.com/takeoutweight/clojure-scheme
Note that this project is unmaintained and the last updates are ~10 years old.
How about Scheme?: https://github.com/takeoutweight/clojure-scheme
Note that this project is unmaintained and the last updates are ~10 years old.
For a more active native code Clojure interpreter with active users and practical libs, see also Babashka: https://github.com/babashka/babashka (links under Related projects heading can also be interesting)
Built with the lovely SCI library (https://github.com/babashka/sci) + GraalVM, probably the most useful GraalVM project I've seen in the wild so far.
Also, Babashka will probably always support more features than ClojureRS ever could, particularly the interop with the various Java classes/functions, as that'd be very hard to achieve in ClojureRS.
Also, Babashka will probably always support more features than ClojureRS ever could, particularly the interop with the various Java classes/functions, as that'd be very hard to achieve in ClojureRS.
Extremely useful. I use it to write small to medium scripts, replacing Bash. For example, I wrote a small client that interacts with Pocket API. [1] Aside from interop with shell commands (I use Fish for that), most things seem pleasant so far.
[1] https://github.com/hiepph/dotfiles/blob/master/scripts/_pock...
[1] https://github.com/hiepph/dotfiles/blob/master/scripts/_pock...
(While it seems that the project isn’t active) I’m interested not because of the Rust part but because of the more independent part, with plans to implement conditions and restarts [0].
I’ve mentioned a few days ago [1] about the lack of a clean and consistent lisp (in the development sense, not in the core-language-is-tiny sense) with a CL-like REPL-driven development workflow: maybe Clojure with conditions and restarts can be part of the picture?
(In Common Lisp, restarts and conditions are a major part of the REPL as it allows the REPL to have a mechanism to catch error conditions and allows the user to resume execution appropriately, after the user debugs and fixes errors.)
[0]: https://lisper.in/restarts
[1]: https://news.ycombinator.com/item?id=31179701
I’ve mentioned a few days ago [1] about the lack of a clean and consistent lisp (in the development sense, not in the core-language-is-tiny sense) with a CL-like REPL-driven development workflow: maybe Clojure with conditions and restarts can be part of the picture?
(In Common Lisp, restarts and conditions are a major part of the REPL as it allows the REPL to have a mechanism to catch error conditions and allows the user to resume execution appropriately, after the user debugs and fixes errors.)
[0]: https://lisper.in/restarts
[1]: https://news.ycombinator.com/item?id=31179701
Oh hey, yea this is mine. Stopped for a while initially because of serious epilepsy. Don't know when I'll pick it back up but in my free time I've been trying to think of what direction I want to take with it, because another goal not listed there (I think) is a Smalltalk-like development environment, but I almost wonder if I should just make that in vanilla Clojure. I do have a branch locally starting the implementation built upon some Rust graphics lib (iced or druid maybe)
Nice to see you here, thanks for stopping by :) Really sad to hear about the epilepsy, hope it's going better now!
Regarding picking it back up, would you have any interest in being funded by the community to work on the project? I know myself and others are very interested in seeing Clojure in Rust with interop, and would be interested in funding the effort if it's something you're interested in.
Maybe you could leave some contact details on your about page here on HN (no one except HN mods/admins can see your email) and we could talk privately if you prefer that.
Regarding picking it back up, would you have any interest in being funded by the community to work on the project? I know myself and others are very interested in seeing Clojure in Rust with interop, and would be interested in funding the effort if it's something you're interested in.
Maybe you could leave some contact details on your about page here on HN (no one except HN mods/admins can see your email) and we could talk privately if you prefer that.
Not sure, would have to discuss and think about it. I just put my email on my about page if that helps
Someone added conditions/restarts to Clojure: https://github.com/IGJoshua/farolero
It does allow errors to be caught by the Repl and choose how to handle them.
Honestly though, I haven't found the interactive restarts at the REPL useful. It's way faster to just re-evaluate the code again.
Maybe in CL they are more useful because the language is full of mutation? I can't say, I've only ever done Clojure and Emacs Lisp, but in Clojure I tried that library, and found picking options at the REPL to handle the condition was more laborious than just fixing whatever or adding a catch and pressing Ctrl+Enter again.
It does allow errors to be caught by the Repl and choose how to handle them.
Honestly though, I haven't found the interactive restarts at the REPL useful. It's way faster to just re-evaluate the code again.
Maybe in CL they are more useful because the language is full of mutation? I can't say, I've only ever done Clojure and Emacs Lisp, but in Clojure I tried that library, and found picking options at the REPL to handle the condition was more laborious than just fixing whatever or adding a catch and pressing Ctrl+Enter again.
> I’ve mentioned a few days ago [1] about the lack of a clean and consistent lisp (in the development sense, not in the core-language-is-tiny sense) with a CL-like REPL-driven development workflow: maybe Clojure with conditions and restarts can be part of the picture?
There seems to be some efforts of adding user-land conditions, see for example https://nextjournal.com/pangloss/a-tutorial-on-conditions-an...
One could imagine another user-land REPL that also makes use of that, to give a similar REPL for Clojure as for Common Lisp.
There seems to be some efforts of adding user-land conditions, see for example https://nextjournal.com/pangloss/a-tutorial-on-conditions-an...
One could imagine another user-land REPL that also makes use of that, to give a similar REPL for Clojure as for Common Lisp.
Thanks for sharing! I think these restarts could definitely be implemented as a library in Clojure with the help of a coroutine library like https://github.com/leonoel/cloroutine#guides
From the github:
Project Goals:
1: To create a version of Clojure that gets to exist independent of a particular platform
2: To explore a Clojure that, being more independent, has
This is exciting stuff!
1: To create a version of Clojure that gets to exist independent of a particular platform
2: To explore a Clojure that, being more independent, has
Proper tail call elimination
Conditions / Restarts
Any other feature it might not normally be able to indulge
This is exciting stuff!
I've been checking out Babashka [1] recently. It allows you to write clojure scripts and output a single-binary with fast startup time.
Then I did a very brief search for clojure libraries, things like parsing html. Most of the github projects were not seeing much activity (like last commit in 2020).
I've found bash-as-glue of unix programs like ImageMagick, curl, jq and pup very practical [2]. I was just looking for a possible alternative to be sure I'm not missing out. Doesn't seem like it.
Anyone wants to hop in and sell me on his own approach?
[1]: https://babashka.org/
[2]: https://news.ycombinator.com/item?id=31142635
Then I did a very brief search for clojure libraries, things like parsing html. Most of the github projects were not seeing much activity (like last commit in 2020).
I've found bash-as-glue of unix programs like ImageMagick, curl, jq and pup very practical [2]. I was just looking for a possible alternative to be sure I'm not missing out. Doesn't seem like it.
Anyone wants to hop in and sell me on his own approach?
[1]: https://babashka.org/
[2]: https://news.ycombinator.com/item?id=31142635
One data point, from a registered bashochist, and a clojurist- I think he's on to something for Clojure-based build tooling. bb is much more ergonomic than the tooling Cognitect is themselves providing. But I don't see it getting into my main non-clj shell workflow. That's even though I really don't like having to appease jq's opinions of aggregate hierarchical querying. But there's too much unique value working directly in the shell in most cases.
Where the shell work dips directly into areas clj is strong- pure data processing- I have recently been thinking that maybe bb could make it easy to create a full clj repl environment, so I wouldn't have to suffer through jq. But that wouldn't be doing the work in a shell with bb. It would be doing the work in a repl. FWIW.
One other point- lack of activity on clojure libs is not the red flag it is in other languages. There's much, much less of the churn and grind that there is everywhere else in the ecosystem. When there is something novel that doesn't have a native clj implementation, it very likely will in Java, and pulling that into clj- even straight from java source on github- is easy.
HTH. Cheers.
Where the shell work dips directly into areas clj is strong- pure data processing- I have recently been thinking that maybe bb could make it easy to create a full clj repl environment, so I wouldn't have to suffer through jq. But that wouldn't be doing the work in a shell with bb. It would be doing the work in a repl. FWIW.
One other point- lack of activity on clojure libs is not the red flag it is in other languages. There's much, much less of the churn and grind that there is everywhere else in the ecosystem. When there is something novel that doesn't have a native clj implementation, it very likely will in Java, and pulling that into clj- even straight from java source on github- is easy.
HTH. Cheers.
You see, I keep asking myself, when I want image processing, I reach for IM. video processing? ffmpeg. Json/XML/any structured data? jc | jq.
It's hard to beat this workflow. Like, what possible ""java"" library is gonna beat the ubiquitous unix tools?
It's hard to beat this workflow. Like, what possible ""java"" library is gonna beat the ubiquitous unix tools?
Agree. Though- of tangential interest, on the margin-
For a commercial project I have been dipping into webassembly, and figuring out how to run wasm inside a JVM. The setup ergonomics are terrible, because it's native code land.
But it works, and performance is spectacular.
With all the build tooling targeting wasm, maybe there is a crazy future where native engines become pervasively available under wasm, and therefore inside a JVM....
This is not far from where Python has been- for 20 years. Its mechanical sympathy with native libraries is a big part of its current supremacy. But Py is a poor shell and repl, and most cli tools don't ship as engine libraries.
So nothing yet competes with bash on the file system chaining together executables.
Should there be widespread wasm, though, in THAT world, a Clojure repl with a nice menu of engines, caches, stores, all just functions and data- those ergonomics might get some people to switch...
(fantasy goggles off now)
For a commercial project I have been dipping into webassembly, and figuring out how to run wasm inside a JVM. The setup ergonomics are terrible, because it's native code land.
But it works, and performance is spectacular.
With all the build tooling targeting wasm, maybe there is a crazy future where native engines become pervasively available under wasm, and therefore inside a JVM....
This is not far from where Python has been- for 20 years. Its mechanical sympathy with native libraries is a big part of its current supremacy. But Py is a poor shell and repl, and most cli tools don't ship as engine libraries.
So nothing yet competes with bash on the file system chaining together executables.
Should there be widespread wasm, though, in THAT world, a Clojure repl with a nice menu of engines, caches, stores, all just functions and data- those ergonomics might get some people to switch...
(fantasy goggles off now)
Thanks for sharing your insight
> Json/XML/any structured data? jc | jq.
Except that once you try EDN, you wouldn't want to deal with JSON anymore. EDN is a lot nicer - it's compact, doesn't contain "syntactical garbage", and easier to read and modify. To deal with API requests I use github.com/borkdude/jet, another useful tool from the author of babashka.
Except that once you try EDN, you wouldn't want to deal with JSON anymore. EDN is a lot nicer - it's compact, doesn't contain "syntactical garbage", and easier to read and modify. To deal with API requests I use github.com/borkdude/jet, another useful tool from the author of babashka.
Nothing prevents you from using babashka and still use it as a glue for Unix programs. The difference is you get a nicer language (my opinion), a REPL if you want, and also you do get access to a lot more libraries from Java and Clojure and the pod concept if you need too as well, sometimes for more advance use cases.
So to be clear, you can easily use ImageMagick, curl, jq, pup, etc. See: https://clojure.github.io/clojure/clojure.java.shell-api.htm... and https://github.com/babashka/process
Other benefits are that you only need to learn Clojure and suddenly you can use it for everything, backend apps, frontend apps, scripts, etc. You don't need to learn bash, js, java, go, make, etc.
> Then I did a very brief search for clojure libraries, things like parsing html. Most of the github projects were not seeing much activity (like last commit in 2020)
This surprises everyone, but those libraries still work, have no bugs, are missing no features, and can be used without issues in production.
Clojure is one of the most stable language, so things never break and almost never need updating.
People have a kind of Stockholm syndrome I think coming from other languages that if something didn't need a bug fix in a year it must be abandoned and broken.
And the reason you often don't need to update those libraries to keep up with the environment, like OS versions, is because they all leverage existing runtimes under the hood like JVM and that's the one that updates. So they're all secure and kept up to date, working with new OS and new architecture for free as JVM updates. This applies to Babashka as well, because it is implemented using a JVM.
So to be clear, you can easily use ImageMagick, curl, jq, pup, etc. See: https://clojure.github.io/clojure/clojure.java.shell-api.htm... and https://github.com/babashka/process
Other benefits are that you only need to learn Clojure and suddenly you can use it for everything, backend apps, frontend apps, scripts, etc. You don't need to learn bash, js, java, go, make, etc.
> Then I did a very brief search for clojure libraries, things like parsing html. Most of the github projects were not seeing much activity (like last commit in 2020)
This surprises everyone, but those libraries still work, have no bugs, are missing no features, and can be used without issues in production.
Clojure is one of the most stable language, so things never break and almost never need updating.
People have a kind of Stockholm syndrome I think coming from other languages that if something didn't need a bug fix in a year it must be abandoned and broken.
And the reason you often don't need to update those libraries to keep up with the environment, like OS versions, is because they all leverage existing runtimes under the hood like JVM and that's the one that updates. So they're all secure and kept up to date, working with new OS and new architecture for free as JVM updates. This applies to Babashka as well, because it is implemented using a JVM.
I made myself a scripting language called Calcit http://calcit-lang.org/ , features persistent data function, macros, higher-order functions, and also compiles to JavaScript. Now I use it as a replacement for ClojureScript since I make Calcit compile to JavaScript in ES6 module, which works seamlessly with Vite!
If anyone feel interested, please give a try.
One thing to notice is Calcit is using indentation-based syntax while supporting macros. It's strange, but it works really well.
If anyone feel interested, please give a try.
One thing to notice is Calcit is using indentation-based syntax while supporting macros. It's strange, but it works really well.
Wow, you have so much cool tools you are building. It's been .5 hrs since I started digging and is still reading up on https://github.com/Cirru, calcit-editor, and your medium posts. You should post sometimes on https://www.reddit.com/r/nosyntax/ if you haven't already.
Edit: On to your year in review posts now.
https://jiyinyiyong.medium.com/year-review-of-2019-on-coding...
https://jiyinyiyong.medium.com/wip-2020-working-projects-38d...
Seeing Cirru being used is a good sign. Showing a tiny graph of usage over time can give confidence to new users.
Edit: On to your year in review posts now.
https://jiyinyiyong.medium.com/year-review-of-2019-on-coding...
https://jiyinyiyong.medium.com/wip-2020-working-projects-38d...
Seeing Cirru being used is a good sign. Showing a tiny graph of usage over time can give confidence to new users.
good idea. I will post Cirru there.
I have several more articles/videos posted in Chinese, not ready to push all that forward yet... there are too many repos under Cirru and Calcit, many of them are not well maintained I'm afraid. :D
I have several more articles/videos posted in Chinese, not ready to push all that forward yet... there are too many repos under Cirru and Calcit, many of them are not well maintained I'm afraid. :D
My two favourite languages made a baby!
Would love to see this implemented as a macro too, like macro_lisp!
Would love to see this implemented as a macro too, like macro_lisp!
Now can someone do the same for Common Lisp :D That would be amazing
Someone did: https://github.com/ruricolist/cloture
Why? What is missing for you from the great implementations we already have?
From what I understand the vanilla JVM implementation isn't built around a small core. So it's not like porting a Scheme. All the data structures and what-not are written with Java (not a criticism, it's great for performance and interop)
But wouldn't it make more sense to first rewrite Clojure itself in some small/minimal scheme-y subset of Clojure - and then port that subset to Rust/Dart whatever? (With some performance penalty)
I'm not super on top or Clojure's implementation, and people are prolly not doing this for a good reason - so I'm likely off base here somewhere