That all depends. Embed Embed this gist in your website. In a business setting, what would I use? Clojure vs Scala, Dynamic vs Static Typing. Before hearing the Scala community I considered this to be a fundamental weakness in Scala, that you have to submit to it?s type system. Well as I said Clojure wins big points with macros by controlling evaluation and elegantly build DSLs, greatly speeding up the entire work process. While Clojure is robust, practical, and fast, measuring the speed of code can be quite tricky in Clojure, since many components are involved in the program. A series of computations are lined up but are never performed ? Being run outside Emacs, Scala weighs in at: So in this small example they are 2 msecs apart, leading me to believe they compile almost exactly the same bytecode. I guess I should make some sort of statement as to which is better. Scala does not in anyway discourage it?s users from side-effects and mutable code. Not wanting to look bad, we need to fix this and manually handle our stack. In the process of our project we had to run through several hundreds of thousands of lines of data from them. Secondly it was decided that ?;? They are both pretty good. Skip to content. However, we spent a whole lot of time with dealing accidental complexity, specifically "what type is this field" and nulls all over the place. isn?t Lazy where Clojure?s sequence is, in theory that should have had a very bad effect on our performance, but it seems to be able to hold it?s own. Run that same curl call when the service returns the future and you get something like Promise@1847747152(state=Interruptible(List(),)) instead. Clojure ist eine funktionale Sprache in der LISP-Familie, sie wird auch dynamisch typisiert. To get back to the business of manipulating sequences, I?ll show you both of these implemented as idiomatic one-liners that don?t blow the stack: Alright, so we?ve written code which earns us the envy of the world but how does it perform? For one because I feel it?s unnecessary, and second I want some of my functions to work with a multitude of types. This begs the question: is there anything wrong with Java?Well, certainly Java did a lot of things right. So the result is correct, but due to us building up the stack, calculating 3600! I think because it?s a unnecessary ceremony ? GitHub Gist: instantly share code, notes, and snippets. For Cassandra, read latency was under 0.2 ms and write latency was an order of magnitude less. There is none of "this is how the language affects how you design your software" and there is plenty of "oh, here's a quicksort, big and scary. Off the top of my head I know I?ll want to run about 200 hits on factorial(5000) and calculate average cpu time. One way to do this, would look like this: We are still concise on both parts. Run curl -d name=Griff http://localhost:8080/participant/new when the service awaits for the future to complete and you get something like [{“name”:”Griff”,”id”:3928}] as the response. Static vs dynamic typing. It will take you miles and miles beyond where you can go using C/C++/Java/Perl etc. To me, it looks more appropriate for building web applications where the server side Scala generates the HTML intended to be rendered by web browsers. Clojure is functional and pure, it protects you. Take an argument x, if x = 0 return 1, if not then return x * the factorial of x ? That means that in Scala you have no primitives (like ints, chars, etcs), everything is an object. Sign in Sign up Instantly share code, notes, and snippets. There is a time-macro in core and it looks something like this: So thats very simple. Clojure. and this goes on and on. Does this mean that you would always recommend Clojure over Scala? Anyone with some basic code skills can look at that and see whats going on. Outright moving away from a functional approach into an imperative style is not something you would see in Clojure. I was able to get higher throughput from the Clojure service but at the cost of running the service at 97% CPU utilization. I ask the Scala REPL to calculate 2 + 2, I don?t specify that these are of type Integer. To fix this, we add an accumulator as an argument so we don?t build up the stack. A: That all depends. Beides! The higher latency of the Clojure … I guess the safety vs brevity question is most salient. While there I translated the fractal tree program from Clojure to Scala. Scala uses an Erlang inspired … TL;DL; Intro; Goals; Building Web API. Scala is functional in the broadest sense of the word: It has immutable constructs. It can get work done even faster than Java. I thought that Jetty started using NIO so doesn’t mean that Jetty no longer requires thread affinity per request? That is way too high when stability and availability is the driving concern. ?Elapsed time: 144.1234 msecs? Programmers sometimes need the box to be visible in order to not step out of it, when it?s unnecessary. There is some more discussion of Scala vs. Clojure. Copyright © 2021 Glenn Engstrand. Now you?ve seen a bit of Scala and I hope you?re intrigued like I was when I first stumbled upon it. In all tests, the Cassandra and Redis performance was awesome and in no way indicative of overall performance problems. But it does the very same thing. Except for the very confusing fact, that Range in Scala is specifically implemented as lazy. I was able to get higher throughput from the Clojure service but at the cost of running the service at 97% CPU utilization. (2) Ich habe irgendwo gelesen, dass Clojure zusammengestellt ist. I was supervising a new team of developers some time ago and was considering introducing Clojure as their primary tool. A second thing to notice is that Clojure has explicitly rejected the OOP approach to programming, because, Scala has done quite the opposite, they?ve wholeheartedly embraced OOP making everything objects. Quickly allows you to get practical work done. Take the first from that sequence (that'll be one), It?s born of simulation, but now used everywhere for no good reason, It?s got mutability principles baked into it. This gives a little overhead on each item, but depending on your design you win big by doing less work. Beyond the obvious head start that Scala had over Clojure, the simple fact is that Scala is similar enough to Java that it is easy to pick up, and can be used as a “better Java”. If you can harness the power of Lisp by all means do so! One guy asked me ?Havent you ever passed arguments in the wrong order and expected a different return than what you got ?? Zur Performance und Java Interoperabilität: Clojure vs. Scala Ich habe bereits verschiedene Berichte von Clojure gegen Scala gelesen und während ich merke, dass beide ihren Platz haben. If your team is not able to adobt and fully appreciate Clojure in all it?s aspects I would not hesitate a moment in recommending Scala. When comparing Scala vs Clojure, the Slant community recommends Clojure for most people. When I look at both of them, these are the things that come to mind. Which book is that? In Clojure the language really forces you to make an informed decision if you start changing values. Here are some answers to questions about the document below. Of course, it is no longer a fair comparison since they are no longer functionality equivalent. Der Gewinner ist der die beste Sicht zu Google hat. I suppose it?s not criminally bad that a development build is broken, but it just doesn?t happen with Clojure. Lastly, not having an STM, I think Scala programmers are headed for trouble, but only time will tell. I?ve drawn up this table, which compares Scala and Clojure, feature for feature, pound for pound. From the document below, it looks like Clojure is the winner. Clojure vs Scala Last week, someone posted a question on the Clojure group asking for a comparison between Clojure and Scala. Clojure is the businessmans best friend. Both are breaking new ground in Software Development. Efficiency isn’t always the driving concern and there are many situations where that Scala performance would be good enough. Scala is not as straight forward as Clojure in this regard, because it doesn?t have macros. If you want to mutate transients for example and one of those is accessed from an outside thread, you get an exception. With the Oracle deal, and some discussions about the slow Java 7 release, it looks like Java is detoriating faster not slower. Scala on the other hand uses both expressions and statements in a very big way. Features wie die STM-Unterstützung bieten eine der besten sofort verfügbaren Nebenläufigkeits-Unterstützung, während Scala eine Bibliothek von Drittanbietern wie … As you can see, they're effectively the same program. etc. Since Clojure has macros (functions where I control the evaluation myself), its very simple to get the time of a computation. Values are mutated, nested while-loops, the works. This recurses like so. * are all immutable I?ve seen alot of code based on Arrays which perform well, but are mutable. 1. But for people who have a hard time getting arguments order and return types right, this system is a great help. It?s not the nicest way, but it works. 2. Neither brings anything revolutionary to their respective type system … I now believe that thread affinity is a good thing. People asked about a few other languages as well, so let's get them out of the way first. Clojure gets to show off a unique feature which is arity-based dispatching. The most important reason people chose Clojure is: Isn’t there anything you can do to get the scala news feed to perform better? Start changing values Scala ; tl ; DR. Scala & Clojure run on the JVM, Building a Scalable feed. I believe this point standing scala vs clojure is a servlet container and the you! Clojure Round 2 - concurrency the key is really correctness, which the STM provides in abundance personally to. I don? t like Java developers things I? ve drawn up this table, which specific... It relatively easy to get it into Java shops and easy to scala vs clojure or on. ), everything is an object always recommend Clojure over Scala treats equally among all API! 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