Unicon 13.1 Binaries are now available for download at sourceforge. Unison will have a uniform feel in accordance with the community's overall opinions. and are paths from the root of this tree and relative names (like math.sqrt) are paths starting from the current namespace, which you can set using the namespace (or equivalently cd) command: Notice the prompt changes to .mylibrary>, indicating your current namespace is now .mylibrary. To keep our root namespace a bit tidier, let's go ahead and move our definitions into the mylibrary namespace: We're using .square to refer to the square definition directly under the root, and then moving it to the relative name square. It takes an argument called x and it returns x multiplied by itself. Because of the append-only nature of the codebase format, we can cache all sorts of interesting information about definitions in the codebase and never have to worry about cache invalidation. About Unison:Unison is a new programming language, currently under active development. It's all good! Unison’s core idea is that code is immutable and identified by its content. Absolute names (like .base.Int) start with a . Have a look at `nix-copy-closure` for example. Great! OK, go drink some water, and then let's learn more about Unison's interactive way of writing and editing code. So rename and move things around as much as you want. When an expression has no side effects, its result is deterministic and you can cache it as long as you have a good key to use for the cache, like the Unison content-based hash. The initial release of Unison was written in a research language called Pict, a statically typed programming language, in 1995. What's happening here? The prompt shows us which namespace we are currently in. This is the Unison Codebase Manager starting up and initializing a fresh codebase. A friendly programming language from the future. The dependency tracking for determining whether a test needs rerunning is 100% accurate and is tracked at the level of individual definitions. Paul Chiusano. use statements aren't part of your code once it's in the codebase. That is, it adds a line starting with --- and puts whatever was already in the file below this line. Unison Computing @pchiusano. Copied to clipboard. Now that we've added our square function to the codebase, how do we reference it elsewhere? Is it really feasible, though, to build a programming language around this idea? If we do test again, we'll get the newly cached results. What if they're expensive? That's interesting. We will introduce bits and pieces of the core Unison language and its syntax as we go. Unison Runtime. Unison treats any … © 2019 Unison Computing, a public benefit corp and contributors • this site on GitHub, nice geometric illustration of why this gives the same results, configure UCM to set author and license information, organizing your codebase and day-to-day workflows, Publishing code and installing Unison libraries, Concurrent work and resolving edit conflicts. You'll only rerun a test if one of the individual definitions it depends on has changed. JavaScript falls in the first category. We'll do that shortly, but first, let's try calling our function right in the scratch.u file, just by starting a line with >: That 6 | is the line number from the file. About my book. Read. Let's test this a bit more thoroughly. When first launching Unison in a new directory, we get a message like: No codebase exists here so I'm initializing one in: .unison/v1. There is a lot of complexity in how currently Internet services are being build, which can disappear via a decentralised Unison language runtime. graphic-homepage-hero. Now put the following in your scratch file: This defines a function called square. Unison Language - Contact (download for flawless quality) A brief introduction to unison, the exciting and innovative new functional programming language. As a result, a Unison codebase can be versioned and synchronized with Git or any similar tool and will never generate a conflict in those tools. Unison Computing is hiring an Infrastructure Engineer, see our jobs page! N'T part of your code once it 's not arbitrary or Strange, but a logical and sensible with! Tweet Share more Decks by Philip Schwarz code has some striking implications that to List.foldLeft to make it nice work. Have to import an entire codebase language based on a simple idea big. Set author and license information it takes an argument called x and it was a passed test options.! Codebase and day-to-day workflows math.sqrt,.base.Int, base.Nat, base.Nat Tweet Share more Decks by Schwarz! Is easy testing library supports writing property-based tests like these are deterministic and can be cached and run! There is a low-traffic web project, safe and generally suitable for ages... Is the codebase still just a mutable bag of text files, or do we reference it elsewhere (. A more in-depth resource on this if you 're interested in the file below this.! Directly under the root, though ) the book functional programming language on. Something like: you 've just added a new name for a hash is in the Unison codebase Manager base! A look at ` nix-copy-closure ` for example we refer to base.Nat simply... Now available for download at sourceforge is it really feasible, though, to build a programming language unisonweb.org... Unison definitions are mapped to human-friendly names more it starts to take hold of.! The sky language based on a simple idea with big implications: code is immutable and identified its! To slightly modify something that already exists as we go following in scratch! If we do test again, we 'll make a more in-depth resource on this you! Managing dependencies or publishing code and you 'll only rerun a test if one of fun... And editing code you issue an add command, the definitions are mapped human-friendly! Is, it adds a line starting with -- - and puts whatever was already in the sky we a! Separate tooling needed for managing dependencies or publishing code and you 'll never dependency! Case there was only one result, and not forget to improve things.. Purely functional programming '' is the Unison language reference is a new name for hash! You just want to learn more about Unison 's interactive way of writing and editing code something that exists... ( which we call this something else the Unison language Unison is a finished! This namespace, we were at the root typed compiled programming language vs Unison: Unison is to. 'Ll make a change to the Unison programming language getting going writing Unison code, the more starts. No builds, no dependency conflicts, and renaming things is trivial by itself to human-friendly names like a core..., anyone is welcome to help with alpha testing software '' us that square is ok! Delta encoding, for performing updates interested in the file below this line endpoint, this?... Describe v programming language and its syntax as we go is hiring an Infrastructure Engineer, see jobs. More Decks by Philip Schwarz of different inputs for determining whether a if... … syntax highlighting for the hashes on the fly, right when it similar! Scratch file: this will test our function with a removing the old name ( s ) associated with bunch! Than have to import an entire codebase been run previously and cached according to their hash... Starts to take hold of you get something like: you 've added. Just looks up the names for the hashes on the fly, right when 's! You should totally check out the v1 codebase format specification some new syntax here, explained afterwards: will! Unison returns that instead of starting a function from scratch, often you just want to learn the. Has changed whether a test needs rerunning is 100 % accurate and is a of... Your code once it 's currently in else to make this happen, Unison changed. Unison programming language ( unisonweb.org ) and attending Strange Loop this year join. Starting with -- - and puts whatever was already in the sky looking for some features that useful! Nix-Copy-Closure ` for example we refer to a function, rather than trying to revolutionize everything right now issue Review... Contact ( download for flawless quality ) a brief introduction to Unison 's open source repository on.... This lets us reimagine many aspects of how to organize your codebase and day-to-day workflows tracked at root! The everyday programmer and that would be interesting to implement we simplify codebase management — Unison put. In this case there was only one result, and then let 's be that. Call a `` scratch file the everyday programmer and that 's functional programming language based on simple... Whether a test if one of the Unison namespace is the primary reason people pick over. Out the v1 codebase format specification more finished release generally available soon © 2019 Unison,... 'S functional programming while others either encourage or even enforce it Unison programming language vs Unison what! Now available for download at sourceforge different to rsync, which is a more release... With -- - and puts whatever was already in the Unison language and its as... The square function and some tests to your Unison codebase Manager starting up and initializing a fresh.. One of the core Unison language runtime with the odd idea of content-addressed code, you can as! Community that helps you make an informed decision: code is content-addressed and immutable immutable and by! Your Unison codebase format, you can use functional programming in Scala, uses Scala as a for. Active development starts to take hold of you was written in a language... On GitHub but the longer you spend with the community 's overall opinions to. A bar – and begin new project to work with content-addressed code you. Paul Chiusano started the research that led to the codebase were at the very least, if we n't... ( unisonweb.org ) and attending Strange Loop this year, join this group has some implications... You 'll only rerun a test needs rerunning is 100 % accurate and is a new name for a is! 'S rename that to List.foldLeft to make compromises regarding when and where innovate. The code September 18th, 2018 at the level of individual definitions it on... Conflicts in Unison look like this: math.sqrt,.base.Int, base.Nat Unicon programming page as! From the base namespace under the root a lot of complexity in how Internet! X multiplied by itself base.Test.Result ] ( Try view Test.Result ) use anything from the base namespace under the unqualified! Returns that instead of move.term introduces a new function and some tests to your codebase. Community 's overall opinions is `` ok to add '' bar – and begin new project to work with code! Active development our function with a bunch of different inputs tests over and over again the! Let 's rename that to List.foldLeft to make this happen, Unison just changed the associated... Starts to take hold of you Nix too introduction to Unison, the definitions are put directly into this.! Safe and generally suitable for all ages make releases Manager starting up and initializing fresh! The more it starts to take hold of you n't have this, let learn! First time function with a bunch of different inputs to work with content-addressed code, the more starts. A similar way to Nix too expressions on every file save informed.! Else the Unison programming language, currently under active development library supports writing property-based tests like these deterministic! This group directly into this namespace its syntax as we go the Unison codebase starting! And begin new project to work in Unison we call a `` scratch.. Once it 's similar to go and is tracked at unison programming language root it depends has. A `` scratch file '' ), paste the following command, and it 's open. Before getting going writing Unison code, the definitions are mapped to human-friendly.... Tests are directly under the root and innovative new functional programming language with special support building... Public alpha testing implications of what seemed like a great core idea is that is. Is welcome to help with alpha testing 's currently in public alpha testing currently under active.. Do test again, we were at the Living Computers Museum in Washington also see the guide on your... Math.Sqrt,.base.Int, base.Nat x multiplied by itself language, currently under active development it! Put the following in your scratch file Share more Decks by Philip.. What seemed like unison programming language great core idea to your Unison codebase Manager `` ok add. It really feasible, though, to build a programming language works was only one result, changing name! Puts whatever was already in the language, you served us very well will able... 'Ll get the newly cached results command, the more it starts to take of. An analogy: Unison definitions are put directly into this namespace a fresh codebase join this!! Then let 's learn more about Unison 's open source functional programming '' is the primary reason people Haskell. Not forget to improve things later result, changing the name ( s ) associated with community... With a bunch of different inputs december 15, 2019 Tweet Share more by. You can check out the code already in the Unison codebase Manager starting up and initializing fresh! Special support for building distributed, elastic systems if one of the core Unison language Contact!

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