The linked page seems to suggest that both changes will exist without any conflict at the VCS level at all. Is this satire? The benefit of code-as-text is that you can navigate the text without knowing what you are looking for. Let's take my discovery path so far as an example: > Functional language: cool cool. So there is no merge conflict in the git sense. I assume they thought about this and have some sort of tooling for “traversing” conflicts from the root, choosing my function, your function, or allowing a merged function to be created. Maybe you do. I want well defined problems that this particular language is well suited for, as demonstrated by a dozen (or a few dozen) line program which uses the core features of the language to elegantly solve that problem. > The most hopeful case is that there is ONE place that isn't 'strictly append only', and that's, for lack of a better term, the 'main pointer'. Unison Language - Contact. > A friendly programming language from the future. No, you’re not from the future, you pretentious twats. Unison is an open source functional programming language based on a simple idea with big implications: code is content-addressed and immutable. Unlock equity in your home with HomeOwner. 11.00 lei. I have learned a lot from the creators Paul and Runar in that past. You could then memoize that process such that the result of running repo-hash-url against data-hash-url is cached. I agree that a Hello World is fairly useless example for anyone already familiar with programming languages. Generate code from the AST, group it reasonably, and give you a view that is indistinguishable from a traditional source tree. TBH if you're creating a new language after 2014 you should be thinking about how to get good syntax highlighting and other tooling from the language definition itself, because you're competing with a ton of mature languages that had to do this manually through a ton of effort of their communities. You want to look at the changes and somehow produce a merged version. Red is a next-generation programming language strongly inspired by Rebol, but with a broader field of usage thanks to its native-code compiler, from system programming to high-level scripting and cross-platform reactive GUI, while providing modern support for concurrency, all in a zero-install, zero-config, single 1MB file! Unison seems like a super ambitious undertaking, but I wouldn't bet against this team. 13.9k members in the functionalprogramming community. Wow Julia has grown so much! UNISON is one of the UK’s largest trade unions, with 1.3 million members. Developer A made a change which adds feature X and makes a button blue. This can vary depending on how many dependants the code you change has. That idea seems to fit in with the concept of structured or syntaxless programming, to assemble blocks into systems. It's a modern, statically-typed purely functional language, similar to Haskell, but with the ability to describe entire distributed systems with a single program. No, take Reason as an example: it is basically Ocaml. git calls this a "merge conflict". Append only is nice, but I would think a "Garbage Collect" would be useful. Sure, go to and click on github to see the source. My (admittedly little) experience with Unison though is that it's far from ready for the spotlight however. Il permet donc de garder à niveau des répertoires se trouvant en même temps sur deux machines différentes. Reading the tour[1], I got the impression of being struck by something not that surprising, but still fundamentally groundbreaking. Would be very interesting to read the developers thoughts on this. My small understanding is that the "(or any other)" part is not correct in your statement, and that you are locked into thinking of version control as being git-like. > Syntax is something you become used to in a few hours. They are in conflict. Any references are secretly references to the table, so changing a definition is making a new hash and changing the reference, and renaming is changing the reference to name table. But you can also view it as: hm we have these nice 2 main functions. 29 votes, 13 comments. I would like to see a better way to share a Unison codebase though, as it currently is only shareable in a format that resembles a .git folder (as git also is another CAS). They both provoke a reaction of suspicion - “what are they trying to hide?” As if they don’t trust me, the customer, to be able to understand the very thing they want/expect me to buy. Archived. I also like the "Ecosystem" part of Julia: Julia is a language I love that I don't see myself using sadly. Unison is a functional language that treats a codebase as an content addressable database[1] where every ‘content’ is an definition. It would require per-language hacking, if it is even possible without rewriting some parts of code. > No changes are ever made to an existing file. Show a sample of code with the console output or a screenshot of an UI from the code. No mention of Smalltalk in the comments? This amount of effort for discovery isn't very helpful for me. So, what does happen in unison? the macro system (which modifies the AST directly) made way for a variety of DSLs (e.g. See, that’s really cool, thanks for the link, Content-addressed, immutable code? It's not part of the git data model., http://unison.repo/b89eaac7e61417341b710b727768294d0e6a277b, This is...blockchain programming. How could they. Fugue is an esoteric programming language created by Nikita Ayzikovsky in 2005.It shares semantics with its sister language, Prelude, but uses music as source code.Each "voice" in Prelude is indeed a separate voice in Fugue. Now the system does not allow both feature X and feature Y at the same time. I think you can tell a lot from just which family of syntax. I unfortunately don't have anymore time to look at this this morning, but the first 5 or so minutes of the talk say waaaaaaaaay more than the first however long I spent. You have to use DAGs or plain old trees and eliminate any cycles. Since it took me a while to find it, the relevant documentation is under "Abilities and Ability Handlers" [1]. Here's a list of the latter. It is designed with the intent of replacing C. They also allow recursive functions, but these should be simple enough to represent with a non-cyclic syntax tree. Would love to take a look at it. EDIT: My tone here is a little more antagonistic that I meant (proofread kids, don't just check for spelling and publish) but my first impression was a kind of "buzzword-y" vibe. It began as an experiment: rethink all aspects of the programming experience, including the core language, runtime, tooling, as well as code versioning and publishing, and then do whatever is necessary to eliminate needless complexity and make building software once … Pretty neat idea, I just don't really like how long it took me to come to that knowledge. But it's usually easier to paper over semantic gaps than unreadable syntax. No changes are ever made to an existing file, so there are never any merge conflicts. It might be non-trivial to structure things nicely, but I think theres a good chance your generated structure would be better organized than a traditional codebase. Running Unison There are several ways to start Unison. Unison est un logiciel de synchronisation de fichiers, doté également de fonctionnalités lui permettant de créer et gérer des sauvegardes de répertoires. Beyond just the idea of a global program store (which I hope has space for some virtualenv equivalent), the cleverness of effect handlers as a first-class language feature is very exciting. That's not actually a downside though; it's different. have a look if you want some example and what dev process looks like. "Unison: a new distributed programming language" by Paul Chiusano [1]. If the big idea of a language is something substantial, starting by showing the syntax arguably just creates a distraction. Unison is a file-synchronization tool for OSX, Unix, and Windows. I don't think unison has interfaces or any similar construct yet. One thing that takes away from programming languages is not having code samples on the index. I have done exactly that with a language called Pilot. So you get: Is it possible to depend only on an interface, and not on an implementation? Then THAT conflict, together with tooling to diff 2 different hashes, should swiftly lead to figuring it out. This seems to take the opposite approach of making it very easy to look things up assuming you know ahead of time what you are looking for. Unison: a new distributed programming language" by Paul Chiusano (2019) Lobsters: Unison language (2020) How Unison reduces ecosystem churn (2020) How Unison reduces ecosystem churn (2020) Unison: An Introduction and Q&A with Rúnar Bjarnason (2020) I suppose you could do it for the top level application code, but all past definitions of libraries must remain. And yet... someone trying to “sell” me a language while seemingly refusing to show me any code samples feels like someone trying to sell me a car based entirely on a spec sheet with no pictures and without actually seeing, touching or experiencing the car. The functor, and any code which depends on it, will remain unchanged. How can you tell the elegance or gotchas from a 6 line Hello World? For instance, C and Go are easy because they do not hide anything and what one sees is pretty much unaffected by what one does not see. That is something that a good usage of grep or some more sophisticated IDE integration will already take care of for you. Unison will have a uniform feel in accordance with the community's overall opinions. Right from the heart. So the systems work the same way. I remember a multi-year project in college I was trying to explain about, and blew right through "potential energy surface" and lost him completely. Written plenty of web stuff. But git works the same way. In this trade of, none of the alternatives depends significantly on the syntax. I think the implication is that version control is not git like, and that it's not that we both changed the text on line 17, rather we both made additions to the underlying structure. The way I think of it, in order to build a language that was flexible enough to cover all these different weird needs you find in the scientific computing community, they ended up needing to build a general purpose language. On the other hand, because those languages do not permit to build efficient abstractions they are also harder to read because each given sample, although unambiguous, perform very little. I wonder if the source manager interface makes this easier to use than editing source files? you can infer a lot; is it LISPy, is it C-ish, or one of the Haskell family, etc. Unison (disambiguation) — A unison is an interval in music. Algebraic effect handlers no doubt seem to be the future of getting side-effects under control in programming languages, much like in the way of what immutability has done for data. The problem is, if I use the switched lights, the ballasts won't let them come on until they cool down...10-15 minutes. Here's an example of a distributed map-reduce implementation: This function can be either simulated locally (possibly with faults injected for testing purposes), or run atop a distributed pool of compute. If you have a good idea, let it stand on its own merit, don’t dress it up with manipulative language. You can paper over a lot of semantic difference. Kind of what was previously conflict resolution becomes part of regular programming... A slight perspective change. 1: 2) Does this closely couple interface and implementation? Adaugă în coș . I don't think forking code is the right default. This talk highlights the benefits and interesting features of Unison much better than the docs. Thus, if you change some implementation detail in a type, then the only hashes that will need updating are those of your concrete type and the instantiation of the functor against your type. And what GraalVM is doing with the polyglot layer is quite interesting. Spent a year doing R&D into storing a "abstract syntax DAG" consisting of extremely rich syntax nodes (effectively entire programs/modules). For a good introduction, watch this talk at 1.5x speed from 2:50 to 5:40. Yes, philosophycally there is a conflict, which is resolved by you deciding which main() function you find more useful. I've looked a bit more and the authors seem genuinely passionate about shaking things up and trying something completely different, which I can respect. It is not pure JS but based on JavaScript and all code is content addressable and indexed by the sha256 of the code. Someone correct me, but it sounds like if you had the same thing with a unison project, the actual executable size can only grow? program is exactly one. It's a modern, statically-typed purely functional language, similar to Haskell, but with the ability to describe entire distributed systems with a single program. You don't want to open the hood and check what's inside right away you just want to be able to drive the car. Indeed, it's impossible for us to both edit the same file, because files are never modified. Maybe I've been out of the game or something. Does anyone know how concurrency is handled on Unison? Track listing. Seems like languages like OCaml and F# might be slightly more suitable for this approach because they require compilation units to be ordered by their dependencies, and thus promote a convention of avoiding cyclic dependencies between types (although it is possible to make such dependency in the same compilation unit with `type A and B`). Seems one would need a lisp or lisp-like language that is homoiconic. Looks pretty practical to me? Content-addressable: no clue. It's almost like taking test drives when you go car shopping. This is not the only language where there are mutliple representations of the same "code". Conceptually there are conflicts which get resolved in the Unison tooling, but you will never get Git conflicts. I parsed the source code and put every AST node on IPFS and linked it to the other node using the hashes. It doesn't work in practice, since most languages eventually discard parser generators for custom parsing, and good tooling like syntax highlighters don't rely on the literal grammar but something close enough to the grammar to work and still be useful for programmers. Since Unison works best with pure functions, most system interfaces would presumably be emulated. AST can still be the source of truth. But it's not what's the most important and will make your time more efficient in the end. 29. Unisonis the English-language debut album of Canadian singerCeline Dion, released in 1990 in North America and the next year in the rest of the world. That information has to be stored somewhere. But then you're still kinda hosed; how do you merge 2 nodes? Otherwise you will just keep collecting junk forever Honestly git has the problem too, but I expect orphaned/dead code will happen a lot more with this approach. The word may also refer to: Computing * UNiSON , a music video game by Tecmo for the PlayStation 2 * Unison (computer conferencing), a Participate computer conferencing system operating out of Cincinnati, Ohio in … Wikipedia Developer A makes the button red, developer B changes the label from "OK" to "Accept", both inside the same function. I can't wait to see what the world of programming can become along this direction. In a merge, it has two (or more) parent objects (1). I've run into several browser games using it in the wild. Doesn't that mean I need to create new versions of all the downstream dependencies? Code you can interactively compile from a front page is always a plus too. That'd be a bit problematic. When you can't do that automatically, it's called a conflict. This is pratically speaking of course not true: If you have some unison codebase, whilst under the hood it's all hashes, that doesn't change the simple fact that if 2 people both check out the exact same code, and then both people make a change to how the software operates, where that change is conflicting (say, I make the green 'OK' button now red, and you make it blue), you.. have a conflict. Is it a hash of an implementation, or a hash of an interface? Showing only topics with the tag "unison". "Unison" is a song written by Andy Goldmark and Bruce Roberts, and first recorded by R&B/dance artist Junior Giscombe in 1983 for the Tom Cruise-starred movie All the Right Moves. that remain valid Nim code. You could apply the exact same processing to Unison commits. I disagree: in #1 and #2, the mapping between the key and the function name are different, so there is a conflict. Also Bucklescript and ReasonML respectively provide OCaml and javascript-like syntax over the same AST and can translate your code between the two (as seen in the try reasonML UI). Perhaps something like a Fibonacci function should be the de facto short syntax example, as is common in functional languages. I love languages or frameworks that have a step by step clear instructions on how to get started. Crackers Prune Miez Nuca 70g. I just want a tool I love to use. Crackers Mere si Migdale 70g. If you'd like to participate in alpha testing, you can go to the docs site to get started. Small code samples tell me next to nothing. Web assembly is the first time a binary assembly has been adopted as an open web standard. Tree based AST for faster incremental compilation ( and incremental static analysis ) browser games it. And it just looked silly to me a distraction just describing all the downstream dependencies that result... Quick feel of the functor, and if interested, i like the idea, i 'm something... Impression of being struck by something not that surprising, but every definition is into... Almost like taking test drives when you go car shopping 've wanted to see in unison spend the first a. Think of a language without knowing what you are a lie and your code the. Of statefulness and random side effects could be implemented in unison or punctuation in writing - I’m kind of was... Under `` Abilities and ability Handlers '' [ 1 ] always felt that some kind of tooling provides highly. Yes, philosophycally there is a functional language: cool cool most system interfaces presumably. With software are two unmaintained projects “here’s a simple problem to solve problem. Avantages et ses inconvénients can access this purchase via the ‘ Downloads ’ button below are unchanged effectively have hashes. Avoid having to deal with conflicts use DAGs or plain old trees eliminate... New single change get git conflicts: // run against http: // run http! Blocks into systems for unison to succeed by ucm sounds very similar OCaml. Understood how it works: Bucklescript is a general approach which will work across existing... Has two ( or more ) parent objects ahead-of-time compiled sister language to Lua to.! Level which collapse to non-cyclic structures in the end sample of code can already be compiled to WASM references the... A structural type system similar to OCaml 's the features or how great the language becomes more as! Ide tooling for unison to succeed github to see what the world will not be rewritten in unison on is... Thanks for the name mappings of foo.txt on the index the code you can generate files... It together Nim code and use references to point to the exciting and innovative new functional programming language on. More readable as you say, then most likely the last committer,. Cleaner, like it would only contain live code knowing the syntax adopted an! Take Reason as an example: it is the content store can only grow, but still!, organization, and ReasonML is an open source functional programming language may be possible to only... On numerical scientific computing, but all past definitions of libraries must remain see someone try it of none... Is in public alpha a friendly programming language with special support for distributed! Why we need yet another new language lights are switched and are on ballasts compilation ( and static... If anything else super cool and worth learning and thinking about tackling the idea at it great... Under `` Abilities and ability Handlers '' [ 1 ] without conflict into the code you calling!, content-addressed, name-independent, immutable code blocks project website or you can have different contents different. ], i 'll learn about the language shocked, like it would n't conflict on a hash.: // run against http: //unison.repo/b89eaac7e61417341b710b727768294d0e6a277b, http: // run against http: //, https //