[ANN] Convex - A Clojure-inspired Lisp for the Internet of Value

Convex is an open, decentralised platform for the Internet of Value - you can use it to create secure digital assets and implement applications involving secure value exchange using smart contracts. You can test it out with the live REPL, documentation and sandbox at our developer site:

Re: Migrating nREPL out of Clojure Contrib

l language and it has been awesome so far (see https://github.com/mikera/enchant). Thanks for the great work! On Tuesday, 18 July 2017 20:48:15 UTC+8, Chas Emerick wrote: > > Hi all, > > I've been approached many, many times over the years (and more frequently > since the

Re: Cases of `RT/canSeq`

e a performance performance benefit of > checking for `ISeq` *and* `Seqable` that I'm not aware of? > > On Wednesday, May 3, 2017 at 2:19:42 AM UTC-7, Mikera wrote: >> >> Clearly not necessary from a functional perspective. >> >> However I believe the ordering of these t

Re: Cases of `RT/canSeq`

Clearly not necessary from a functional perspective. However I believe the ordering of these tests will affect JVM optimisations. You want to test the common/fast cases first. And the JVM does some clever things with caching most recently used lookups, which will again behave differently if

Re: [ANN and RFC] Bifurcan: impure functional data strucures

Looks cool! I'm going to mine this for ideas and potentially use it. FWIW I've also been implementing some Java functional data structures for my language design experiments. If anyone is interested happy to share code, my own motivations were: - I wanted decent persistent Lists, Sets, Maps

Re: Combinatorics partitions that preserves adjacency?

Filtering and sorting each partition is going to be pretty expensive! If the list is long you will be discarding most of the results anyway. I found a recursive way to do this that is fairly efficient, by observing that you either want to join two adjacent elements together in a partition or

Re: Making a Java class implement ILookup

You might want to try implementing a small wrapper class that implements ILookup. Then you can do something like: (:keyword (MyWrapper. my-obj)) Prefer composition over inheritance, etc. On Wednesday, 1 March 2017 04:12:06 UTC+8, Ernesto Garcia wrote: > > Hi all, > > I am using Java class

Re: Errors

On Tuesday, 6 December 2016 10:47:42 UTC+8, James Reeves wrote: > > On 6 December 2016 at 01:28, wrote: >> >> And the error messages are not good. >> >> So I was wondering: Is this a philosophical thing? Or is it an effort >> thing? And if it is an effort thing, is there some

Re: Voting

Given recent events, I advise caution when it comes to relying on votes to make important decisions. On Tuesday, 8 November 2016 23:33:43 UTC+8, Alex Miller wrote: > > In the spirit of the US election today, I thought I would mention voting > on Clojure tickets. Clojure manages bugs and

Re: Java like static typing for Clojure?

In my moments of insanity / hammock time I've toyed with making a typed variant of Clojure. Somewhat inspired by core.typed, but I feel that to be effective a type system needs to be deeply integrated with the compiler and standard library, not just a standalone tool. Types would themselves be

Re: comp and partial vs ->>

On Thursday, 27 October 2016 22:56:42 UTC+8, JHacks wrote: > > I have some confusion about how the function `comp` works, especially as > compared to the threading macro `->>`. > > From the book *Clojure Programming* (pages 70-71 of Chapter 2: Functional > Programming), the following two functions

Re: Clojure with Tensorflow, Torch etc (call for participation, brainstorming etc)

On Friday, 7 October 2016 08:25:31 UTC+8, kovasb wrote: > > On Thu, Oct 6, 2016 at 4:46 PM, Dragan Djuric > wrote: > > >> s more harm than good. I prefer to give users one Ford model T, than let >> them choose between 20 different horse carriages. And, if they can even >>

Re: Clojure with Tensorflow, Torch etc (call for participation, brainstorming etc)

the reluctance to commit to a certain API, but I don't think > everyone will rush to commit their code to the API you release anyway, and > the open development will certainly help both the (potential) users and > your team (by returning free testing & feedback). > > > On Tu

Re: Clojure with Tensorflow, Torch etc (call for participation, brainstorming etc)

I've been working with a number of collaborators on a deep learning library for Clojure. Some key features: - An abstract API for key machine learning functionality - Ability to declare graphs / stacks of operations (somewhat analogous to tensorflow) - Support for multiple underlying

ANN: clj-spss 0.0.2 - a lightweight SPSS file reader for Clojure

Hi all, In the (unlikely?) event that someone else also faces the problem of reading / importing SPSS files within Clojure, I've released a small library that does exactly that. https://github.com/mikera/clj-spss Nothing fancy here: it is mostly just a Clojure wrapper for some old Open Data

Re: Porting Clojure to Native Platforms

I would definitely second Tim's points. The JVM is very hard to beat once you factor in the GC and JIT requirements. Worth noting that persistent data structures with structural sharing are used pretty much ubiquitously in Clojure and that these are *exactly* the kinds of data structures that

Re: Clojure IoT?

There are two companies I'm involved with that use Clojure for IoT: Kemuri - http://www.kemurisense.com/ Silverline - http://silverline.mobi/ Both are in the space of assisted living for the elderly, Clojure is used mainly for the sensor data ingestion and analysis. On Monday, 11 April 2016

Re: New Matrix Multiplication benchmarks - Neanderthal up to 60 times faster than core.matrix with Vectorz

On Monday, 14 March 2016 18:21:15 UTC+8, Dragan Djuric wrote: > > >>> >> There is a set of BLAS-like API functions in core.matrix already. See: >> https://github.com/mikera/core.matrix/blob/develop/src/main/clojure/clojure/core/matrix/blas.cljc >> > > Git

Re: New Matrix Multiplication benchmarks - Neanderthal up to 60 times faster than core.matrix with Vectorz

ing on how you count). > There is a set of BLAS-like API functions in core.matrix already. See: https://github.com/mikera/core.matrix/blob/develop/src/main/clojure/clojure/core/matrix/blas.cljc Having said that, I don't personally think the BLAS API is a particularly good fit for C

Re: Is there any desire or need for a Clojure DataFrame? (X-POST from Numerical Clojure mailing list)

le are on the #data-science channel in the Clojure slack Or you can just file a core.matrix issue with a question: I'm usually quite responsive with these and they may serve as a reference for future people who run into similar questions: https://github.com/mikera/core.matrix/issues -- Y

Re: New Matrix Multiplication benchmarks - Neanderthal up to 60 times faster than core.matrix with Vectorz

On Monday, 14 March 2016 08:19:25 UTC+8, Dragan Djuric wrote: > > On Monday, March 14, 2016 at 12:28:24 AM UTC+1, Mikera wrote: > >> It would be great if Neanderthal simply implemented the core.matrix >> protocols, then people could use it as a core.matrix implementation for

Re: XOR two arrays into a third on Clojure

I have a useful library for image manipulation in Clojure, you may find it useful: https://github.com/mikera/imagez New ideas / PRs gratefully received! On Sunday, 13 March 2016 04:14:34 UTC+8, James Elliott wrote: > > Interesting! This is the first time I have had to drop out of C

Re: Is there any desire or need for a Clojure DataFrame? (X-POST from Numerical Clojure mailing list)

On Friday, 11 March 2016 09:09:14 UTC+8, Dragan Djuric wrote: > > This is already working well for the array programming APIs (it's easy to >> mix and match Clojure data structures, Vectorz Java-based arrays, GPU >> backed arrays in computations). >> > > While we could agree to some extent on

Re: Is there any desire or need for a Clojure DataFrame? (X-POST from Numerical Clojure mailing list)

core.matrix maintainer here. I think it would be great to have more work on dataframe-type support. I think the right strategy is as follows: a) Make use of the core.matrix Dataset protocols where possible (or add new ones) b) Create implementation(s) for these protocols for whatever back-end

Re: unable to understand the behaviour of core.matrix/emap ( Bug maybe? )

Yeah, confirmed this is a bug in vectorz-clj. Indexing error meant that the operator was getting applied to the first row twice, instead of once to each row. There is a fix and regression tests in the develop branch already, will be fixed in next release (hopefully today if I have time) On

Re: A doubt about core.matrix

Hi Sunil, You are correct that the naive code will eagerly produce the full matrix UxV, which may be very large :-) I think your strategy of extracting rows and columns from U and V is the best one. Row and column extraction for dense matrices in vectorz-clj is very efficient since it just

Re: Scripting with Clojure / "slow" boot time

Good initiative, I've filled in a response to the survey. One thing that strikes me is that the main issue with loading time is the time required to transitively load and compile all the referred namespaces (which can be a lot in a big project...). This in turn may trigger class loading of

Re: core.matrix and incanter [WAS: Re: [ldnclj] Re: Suggestions for open source contributions?]

ould be nice to pitch in there > too. > > cheers, > Bruce > > On Fri, Feb 5, 2016 at 10:26 AM, Mikera <mike.r.an...@gmail.com > > wrote: > > Hi Bruce, > > > > My view is that the following things should be in core.matrix > > - Fundament

Re: [ldnclj] Re: Suggestions for open source contributions?

set? I'd like to know that > any fixes we pursue would move towards the future design of incanter. > > cheers, > Bruce > > On Thu, Feb 4, 2016 at 10:01 AM, Mikera <mike.r.an...@gmail.com > > wrote: > > There is the start of a dataframe-like implementation in &

Re: Suggestions for open source contributions?

6 at 2:22 AM, Mikera <mike.r.an...@gmail.com > > wrote: > >> If you are interested in data science, help with core.matrix and the >> associated libraries is always appreciated, and we are very >> contributor-friendly in the numerical Clojure community. >> >

Re: Suggestions for open source contributions?

If you are interested in data science, help with core.matrix and the associated libraries is always appreciated, and we are very contributor-friendly in the numerical Clojure community. On Monday, 1 February 2016 18:51:37 UTC+8, Steven Deobald wrote: > > Hey folks! > > Today is the first day

Re: Power function

There is a `pow` function in core.matrix, that computes powers over whole arrays at the same time. Tests / patches to improve this always welcome. On Tuesday, 3 June 2008 16:55:15 UTC+8, Jon wrote: > > As I could not find a ** function in boot.clj, I wrote this one: > > (defn ** >

Re: How is the emphasis of “data over code” different than the XML advocacy of the early 2000s?

I share the same unease. I haven't quite fully been able to articulate all the reasons, but here are the things that concern me most: 1) Completing the API for data access with the representation This is my biggest issue. Good practice IMHO is to keep APIs abstracted from underlying

Re: Migrating from Java/Spring to Clojure

On Monday, 1 February 2016 05:19:17 UTC+8, John Krasnay wrote: > > Hi all, > > I'm migrating an application from Java/Spring to Clojure and I'm searching > for a good, functional approach. The app exposes a REST interface using > compojure-api and primarily interacts with a relational database

Re: [ANN] Clojure.Java-Time 0.2.0

Looks awesome, I'd definitely like to use this whenever I can guarantee running on Java 8 or above. Question: is there any change of having a unified time API in Clojure? That supports both Joda time and Java time? And works with cljs? It is a bit frustrating to have to hard-code to specific

Re: building with Leiningen within Maven

Thanks for sharing, this is definitely something I have been interested in. My use case is a little more specific: I'd like to be able to run a Clojurescript test suite as part of a larger Maven build. Has anyone managed to get something like this to work? On Monday, 28 December 2015 05:06:23

Re: [Q] default decimal of Clojure is IEEE double, not BigDecimal

I personally think the current approach is right. Most people don't need arbitrary precision decimals, so it makes sense to have the fastest implementation used as the default. This also follows the "principle of least surprise" for people who are coming from other languages. If someone really

Re: [ANN] Clojure 1.8.0-RC4 is now available

On Thursday, 17 December 2015 14:59:37 UTC, Herwig Hochleitner wrote: > > Am 17.12.2015 02:35 schrieb "Mikera" <mike.r.an...@gmail.com > >: > > > What's the plan with Tuples more broadly? > > Speaking as a kibitzer to the process: Suppose somebody was

Re: [ANN] Clojure 1.8.0-RC4 is now available

On Thursday, 17 December 2015 04:34:58 UTC, Alex Miller wrote: > > > On Wed, Dec 16, 2015 at 7:34 PM, Mikera <mike.r.an...@gmail.com > > wrote: > >> >> What's the plan with Tuples more broadly? >> > > Don't know. > > I'm willing to tak

Re: [ANN] Clojure 1.8.0-RC4 is now available

Thanks Alex, working well for me and startup times certainly seem a bit snappier. I also agree that APersistentVector should not implement IMapEntry. always seemed like a bad idea to so glad to see it rolled back. What's the plan with Tuples more broadly? I worked on this many months ago

Re: Practical ways to deal with 'bag-of-properties' syndrome, AKA dynamic typing?

I agree 100% that schema is a great tool, and solves some of the problems I still think the absence of (optional) types is a big missing piece in the Clojure story, because of the following reasons: 1. The ideal time to check types is at compile time - you want immediate feedback if you do

Procedurally generated animation in Clojure

Source code using the Clisk library is here: https://github.com/mikera/clisk/blob/develop/src/test/clojure/clisk/samples/animations.clj Video encoding was done using the new Telegenic library which wraps JCodec: https://github.com/mikera/telegenic The original 2D source image was created by Roger

Re: rand-nth on empty collections

Personally I think nth is broken and should throw an exception when passed nil (which should be interpreted as an empty sequence) => (nth nil 10) nil => (nth '() 10) IndexOutOfBoundsException clojure.lang.RT.nthFrom (RT.java:885) => (nth [] 10) IndexOutOfBoundsException

Re: Building mixed Clojure/Java project

er > that I guess the dependencies will be missing (it's not an uberjar, so > we need to build the classpath in some way). > > About ant, the closed issue I linked has a comment from mikera saying > "Good spot. I just deleted the build.xml - it's an old relic, and new

Re: ClojureScript vs. Elm for Multiplayer Web Game

game development in Clojure (with immutable data structures, event handling etc.) then my little game Ironclad may be interesting (it is a desktop client rather than ClojureScript however) https://github.com/mikera/ironclad There is also an article about building a card game (Omnigard

Re: Clojure/Pedestal vs Go

Go is fine for system-level programming, but I personally wouldn't use it as a web application programming language. Ten reasons to consider.: 1. There isn't really much speed difference on micro-benchmarks between JVM code and Go. See e.g.: http://benchmarksgame.alioth.debian.org/u64q/go.html

Re: numbers, why?

You can use *unchecked-math* if you want unchecked arithmetic behaviour: => (set! *unchecked-math* true) true => (+ Long/MAX_VALUE Long/MAX_VALUE) -2 On Friday, 4 September 2015 23:04:27 UTC+8, Ali M wrote: > > Ok, so to give myself a safe and consistent way to reason about this > the addition

Re: Clojure bootstrap, what am I missing here?

A few things to consider: 1. Performance is a key consideration. The speed of the compiler is a major determinant of startup time for Clojure applications, which is very important to many people. Having the compilker written in Java probably helps a lot here - it is generally easier to write

Re: 0.1.0 core.async release?

cases better might help me think about what could be done in ccw, or in clojure-maven-plugin, to remove this need. Le samedi 8 août 2015, Mikera mike.r.an...@gmail.com javascript: a écrit : Has anyone found a good way to automatically keep project.clj in sync with the official pom.xml

Re: 0.1.0 core.async release?

Has anyone found a good way to automatically keep project.clj in sync with the official pom.xml? Maybe using the clojure-maven-plugin or similar? I do this too for a number of libraries, but it's always a manual task and prone to error at present On Saturday, 8 August 2015 07:45:41 UTC+8,

Re: Reality check: EC2 + Ubuntu + Atom (from GitHub) + Clojure?

If you want a free / open source alternative, then Eclipse also offers a great environment for developing Java, Clojure and Python. The Counterclockwise plugin for Eclipse is great - certainly has provided everything I want in a Clojure dev environment (integrated REPL, paredit mode, good

Re: Controlling growth rates of generators with test.check

See: https://github.com/clojure/test.check/commit/d4883873df73717629272d0ab71619d7e58c9c9e On Wednesday, 29 July 2015 23:31:14 UTC+8, Mayank Jain wrote: Nice. Any updates on this? Is this a good idea? On Friday, May 15, 2015 at 12:13:06 PM UTC+5:30, Mikera wrote: Hi all, I am doing some

Re: [ANN] Clojure 1.8.0-alpha3

Hi Alex, 1.8.0-alpha3 is breaking core.matrix at the moment. Root cause appears to be related to how protocols are being handled when used with Java arrays: e.g. for the protocol implementation: (extend-protocol mp/PImplementation (Class/forName [Ljava.lang.Object;) (implementation-key

Re: Java 8 Lambda Interop

It could certainly be achieved in the Clojure compiler, by allowing (some-functional-interface .) to compile to the appropriate function call even if it doesn't implement IFn It would be quite a big change though and would probably have some limitations, e.g.: a) It probably wouldn't work

Re: Java 8 Lambda Interop

July 2015 09:53:25 UTC+8, Andrew Oberstar wrote: Mikera, I think you're addressing a different interop concern. I'm particularly interested in something like this: (- (IntStream/range 0 100) (.filter odd?) (.limit 5) (.collect Collectors/toList)) Where odd? is a normal Clojure IFn that I

Re: What is the best way to pass log configs everywhere without a global var?

On Saturday, 25 July 2015 22:50:55 UTC+8, crocket wrote: Logging libraries seem to rely on a global config. This looks like a dangerous state that could blow up. I researched a little, and there seems to be reader monad and dependency injection, all of which feel awkard. Is there not a

Re: #{:rant} Questions about contribution policy and clojure compiler source.

On Sunday, 19 July 2015 00:03:04 UTC+8, Andy Fingerhut wrote: I don't think the tweets you link are the 'normal approach'. I would call them pretty unusual in several aspects. For one, I think that for the vast majority of Clojure tickets created, no on asks and gets Rich's comments on

Re: [ANN] Clojure.Joda-Time 0.6.0

Looks really nice! Has anyone given thought to a more general time library, that can also handle the new java.time instances? I expect that will become a standard across many Java libraries in the future so it would be helpful to have good interop capabilities. On Wednesday, 15 July 2015

Re: [ANN] suchwow: a grab-bag library with some twists

Can we get links? Initial design docs? This is the first I heard of this, but sounds like something that could do with a decent amount of community discussion and feedback if we are going to establish a good standard. Some properties of such library metadata I'd like to see: 1) Works equally

Re: (flatten non-sequential) has a surprising result

On Wednesday, 1 July 2015 12:55:28 UTC+1, J. Pablo Fernández wrote: Hello Clojurists, Today I was surprised by the result of (flatten 1) which is '(). I was expecting '(1) or an error. Talking in some other people in #clojure @ clojurians.net, not everybody agrees that '(1) is a good

Re: [ANN] Neanderthal, a fast, native matrix and linear algebra library for Clojure released + call for help

and Neanderthal could be a great library *if and only if* it works well with the rest of the ecosystem and you are personally willing to collaborate. Your call. On Monday, 22 June 2015 10:05:15 UTC+1, Dragan Djuric wrote: On Monday, June 22, 2015 at 2:02:19 AM UTC+2, Mikera wrote

Re: [ANN] Neanderthal, a fast, native matrix and linear algebra library for Clojure released + call for help

On Saturday, 20 June 2015 08:43:39 UTC+1, Dragan Djuric wrote: On Friday, June 19, 2015 at 11:17:02 PM UTC+2, Christopher Small wrote: I see now Dragan; you're concerned not about whether easily implementing and swapping in/out implementations of core.matrix is possible, but whether it can

Re: Question regarding java array

Consider using core.matrix with vectorz-clj for operations on large numerical arrays / vectors of doubles. It is a *lot* faster than using Clojure vectors for this kind of scenario, plus it has a lot of helpful array operations already defined. (use 'clojure.core.matrix) (def v (array :vectorz

Re: non-incanter statistical tests?

I intended the core.matrix.stats to be used as a lightweight library as for statistical functions of this nature, while remaining compatible with Incanter and core.matrix. I agree something more lightweight than the whole of Incanter is often required.

Controlling growth rates of generators with test.check

2 2 4 3 3 3 3 4 3 5 1 2 3 2 4 4 2 2 3 6 6 2 5 5 4 6 3) So it seems to work, but is this a sane / recommended approach? Am I relying too much on test.check internals? mikera -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group

Re: Why does the following Clojure code take 10x the time the C# version does? How to improve the Clojure version?

I agree that the problem is immutable/functional constructs per se., but I don't think the problem is the lack of VM support either. It is possible to get *very* fast code on the JVM. In Clojure the issue is more that the dynamic nature of many Clojure constructs and lack of static type

Re: Why does the following Clojure code take 10x the time the C# version does? How to improve the Clojure version?

My general rule of thumb is that idiomatic Clojure is about 10x slower than Java. So this result doesn't really surprise me. If you want to get maximum performance, you will have to do some more advanced / non-idiomatic things like: - Add type hints for classes and primitive values - Use

Re: Clojure community organisation

This is a great initiative. Would love to see an official community organisation. Some things I think are particularly important on the content side: a) Maintain and improve the clojure.org website as the front page for the community b) Produce official user guides and documentation for Clojure

Re: Wrapping org.apache.commons.math3.complex

You often have to do bit of manual coercion to make things work nicely with the whole set of possible Clojure numerical types. Fortunately there are plenty of built-in functions in clojure.core to help you do this. In your specific case I would do: (.add (Complex. 1.0 2.0) (double 2)) This

Re: complex numbers in clojure

of reasonable, it might be acceptable. I am willing to explore this further. . On Tuesday, April 28, 2015 at 12:22:08 AM UTC-4, Mikera wrote: Complex numbers are tricky because: - They need to be fast in order to be useful for numerical computing. The obvious implementations that you

Re: complex numbers in clojure

number type, mostly just by calling b) directly On Monday, 27 April 2015 23:39:34 UTC+8, Nik wrote: I have been thinking along the lines of mikera and Maik - and it seems like there is no further progress here? I would like to take a crack at creating a complex number type, but implemented

Re: clojure, not the go to for data science

accepted. https://github.com/mikera/core.matrix There is also a Google Group here specifically dedicated to numerical topics in Clojure: https://groups.google.com/forum/#!forum/numerical-clojure Maybe if Clojure pulls itself away from the JVM this will change. One big problem with both python

Re: Clojure Culture Question on TDD

Guess this is somewhat a personal perspective, but here are some thoughts on testing in Clojure: - People do a lot of automated testing in general and there are some great testing libraries available (e.g. test.check) - People tend not to strictly follow Test Driven Development practices. e.g.

Re: Extend java class to participate in sequence operations

In that case, I would suggest writing a minimal wrapper, either in Java or Clojure. To get the basic sequence operations, you can simply implement the interface clojure.lang.ISeq on the wrapper. On Wednesday, 18 March 2015 09:17:09 UTC+8, juvenn wrote: Thanks Niels, but what if a java class

Re: Core Matrix Dot Product

I posted some answers on the GitHub issue: https://github.com/mikera/core.matrix/issues/228 But in short, you should use one of the optimised implementations if you care about performance. Clojure vectors are very flexible, but aren't really designed for numerical performance. vectorz-clj

Re: [ANN] Pink 0.1.0, Score 0.2.0

Looks cool, thanks for sharing! Not sure how useful it is, but I wrote some code and a blog post a while back about doing spectrograms in Clojure: https://clojurefun.wordpress.com/2013/12/22/spectrograms-with-overtone/ On Monday, 9 March 2015 02:36:27 UTC+8, Steven Yi wrote: Hi All, I'd

Re: [ANN]: Octet 0.1.0: A Clojure(Script) library for working with binary data.

Thanks for sharing Andrey! Could you comment on how this compares with: https://github.com/ztellman/byte-streams Are the two complementary? Replacements? On Monday, 2 March 2015 03:58:57 UTC+8, Andrey Antukh wrote: Hi! I'm happy to announce the first version of Octet library. _octet_

Re: can binary arithmetic guru help improve these bitmasking ops?

still doesn't quite have the full range of bitwise functionality as far as I'm aware Feel free to use any of my Java bitwise code, if helpful: https://github.com/mikera/mikera/blob/master/src/main/java/mikera/util/Bits.java On Tuesday, 24 February 2015 02:59:32 UTC+8, danl...@gmail.com wrote

Re: Performant string concatenation (of many, large strings)

If you really care about performance then I would use a macro for code generation and do something the following: (defmacro appendfunc ([m keys sb] `(do (.append ~sb (~m ~(first keys))) ~@(for [k (next keys)] `(do (.append ~sb \,)

Re: if-not implementation

Interesting - there seems to be a very slight performance advantage to your version on my machine (consistently about 25% faster for if-nots in a tight loop). I think the problem is actually with not - which isn't getting inlined currently. If I patch not so that it is inlined, the difference

Re: Clojure for Desktop UI Design Application

I'd be pretty interested in this too. Though not quite enough to write it myself (I've made good enough interfaces with Swing interop). The thought occurs that there may be quite a bit of common code that could be shared with respect to diffing / cursors etc. that would work equally well for

Re: [ANN] Neanderthal, a fast, native matrix and linear algebra library for Clojure released + call for help

to Neanderthal. And as Mikera points out, it would be nice if we kept the Clojure matrix API space cohesive. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members

Re: [ANN] Clojure 1.7.0-alpha5 now available

It seems a little odd that there is an ArrayList override but not List. Presumably that is there as an optimisation since ArrayList is such a common case? It seems to have happened in this commit for CLJ-1546, which replaces the List override with ArrayList

Re: [ANN] Neanderthal, a fast, native matrix and linear algebra library for Clojure released + call for help

Looks cool Dragan, thanks for sharing! I would strongly encourage you to wrap this up and make it work as a core.matrix implementation. That would considerably improve interoperability with other libraries / tools in the Clojure numerical space e.g. it could be used as a drop-in replacement

Re: maya - A DSL for math and numerical stuff

Very nice! People interested in this topic may also be interested in Expresso, which supports analysis / transformation of mathematically expressions in Clojure: https://github.com/clojure-numerics/expresso Extra features I would personally find interesting in this space: - Ability to use

Re: Clatrix Multiplication Matrix

You have probably either hit a Clatrix bug or have some kind of version mismatch with core.matrix - could you file an issue with the exact version numbers you are using and code to reproduce: https://github.com/tel/clatrix/issues ? Note that * in clojure.core.matrix.operators is for

Re: lazy-seq performance

A few comments: Your two pieces of code aren't really equivalent: a) The Python code is just calculating a fibonacci number in a brute force iterative loop. b) The Clojure code is creating a big (infinite, lazy) data structure of all fibonacci numbers, lazily realising the structure in memory

Re: [ANN] gg4clj 0.1.0 - ggplot2 in Clojure and Gorilla REPL

I'm trying to figure out how to get core.matrix to load much faster - I think it's actually some kind of Clojure issue with protocols but I'm not *exactly* sure what is causing On Tuesday, 30 December 2014 05:13:24 UTC+8, Jony Hudson wrote: @Mike Thinking out loud here ... one option would be

Re: how do you name your protocols?

28, 2014 at 8:11 AM, Mikera mike.r.an...@gmail.com javascript: wrote: That depends if the protocols are part of your user-facing API or not - a lot of the time I find that protocols are best hidden as implementation details rather than exposed to users. In core.matrix, for example, users

Re: [ANN] gg4clj 0.1.0 - ggplot2 in Clojure and Gorilla REPL

core.matrix isn't that big of a dependency itself - it only gets expensive in/when you load the implementations (NDArray, vectorz-clj, Clatrix etc.). Which should be a choice of the ultimate user. It is possible to just depend on the protocols, but I think that risks breakage since protocols

Re: [ANN] gg4clj 0.1.0 - ggplot2 in Clojure and Gorilla REPL

Very cool! On the data representation front, would you be open to making it support the core.matrix Dataset protocols as well as regular Clojure maps? That would make it much easier to integrate with Incanter 2.0 etc., and potentially avoid some copying overhead. It should be a simple change

Re: how do you name your protocols?

That depends if the protocols are part of your user-facing API or not - a lot of the time I find that protocols are best hidden as implementation details rather than exposed to users. In core.matrix, for example, users never see the protocols directly: only implementers of new matrix libraries

Re: gemacl: Scientific computing application written in Clojure

For most array operations (e.g. dot products on vectors), I strongly recommend trying out the recent core.matrix implementations. We've put a lot of effort into fast implementations and a nice clean Clojure API so I'd love to see them used where it makes sense! For example vectorz-clj can be

Re: Charting Data Format Feedback Requested

It seems to me that we will need a multi-stage pipeline with a few different transformations available. This will give many benefits: a) People can mix and match the components they need for the particular project b) We avoid unnecessary dependencies for people who don't want / can't support

Re: Status of lean runtime?

There's also Kiss, which at least has the potential to run as a fast-loading statically-typed Clojure variant. https://github.com/mikera/kiss Currently I still load clojure.core for bootstrap reasons, but that's not going to be necessary in the future (once kiss.core is complete). I may take

Re: One more for the crappy error messages file.

How are you getting that error? Are you sure you aren't just passing a nil parameter by accident? For example, I get the same error when I pass nil to the clojure.java.io/reader function. Clojure usually throws file not found exceptions where appropriate, e.g. (use 'clojure.java.io) (reader

Re: Considering dropping Eclipse 3.x support for counterclockwise

I would totally support this if it makes it easier to enhance Counterclockwise (which I love!) Not personally aware of anyone still stuck on Eclipse 3.x On Thursday, 4 December 2014 18:18:34 UTC+8, Laurent PETIT wrote: Hello, Eclipse 4.x has been around for many years now, and I'm

Re: [ANN] Clojure 1.7.0-alpha4 now available

This is a great release, thanks! CLJ-1529 seems to have solved a major compilation-time issue with core.matrix CLJ-1578 is a good start in that it stops some of the failures, but the warnings still aren't addressed... I will open a new ticket On Saturday, 15 November 2014 03:34:55 UTC+8,

Re: Deterministic Randomness in Functional Clojure

You may find that wrapping a random number generator as a lazy sequence is a useful approach - it is functional and works nicely in an idiomatic clojure style where you can take as many random numbers as you need while treating the whole sequence as an immutable value. I have an (experimental)

Re: Deployment choices WAR or lein or java -jar for web apps?

To keep things simple I have found it easy to use lein uberjar and java -jar myapp.jar. This removes the need for a separate container / app server and it is probably the easiest choice when you are running an embedded server such as http-kit. Configuration is virtually zero, and this has the

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