improving as-> macro by adding destructuring support

The as-> macro doesn't work with destructuring. This is invalid code: (-> [1 2] (as-> [a & b] [a (inc b)] [(inc a) b])) Because it is expanded to: (let [[a & b] [1 2] [a & b] [a (inc b)] [a & b] [(inc a) b]] [a & b]) ;; this last expression w

Re: Immutable or Effectively Immutable?

Alexandru Nedelcu writes: > On Wed, May 7, 2014 at 5:57 PM, Phillip Lord > wrote: > >> In general, though, if I write some code like >> >> (if (instance? Cons x) >> (pass-to-another-thread-without-synchronisation x)) >> >> I cannot guarantee the result of this because although I know that >> t

Re: Rethinking Literate Programming

Guys, you really are into the Literate part, those emails are huge! let me catch up and then I'll reply... Interesting discussion! On Thu, May 8, 2014 at 4:59 PM, Mark Engelberg wrote: > On Thu, May 8, 2014 at 11:02 AM, Mark Engelberg > wrote: > >> In fact, Clojure has a number of features tha

Re: executing conditional if like iif from other languages

The multi-if was a typo it should be iif. I know if I am passing in a even pairs :then 'dosomething :else 'dosomethingelse works fine with {:keys}. What I think I should be doing is somehow grab whats in :then/:else and wrap in a (do). At this point I was just wondering how to solve for this ma

Re: Rethinking Literate Programming

In the past I've used a java tool to write "acceptance tests". Concordion [ http://concordion.org/]. The idea is simple yet effective. You write your documentation in HTML, and later you can run your code that will interact with that documentation and generate a new documentation, marking the porti

Re: Rethinking Literate Programming

On Fri, May 9, 2014 at 8:33 AM, Erlis Vidal wrote: > In the past I've used a java tool to write "acceptance tests". Concordion [ > http://concordion.org/]. The idea is simple yet effective. You write your > documentation in HTML, and later you can run your code that will interact > with that docu

Re: Immutable or Effectively Immutable?

Thanks Alexandru! That was insightful. :) Even the JLS's (non-normative?) text is confusing IMHO. Section 17.5 ends with this paragraph: The usage model for final fields is a simple one. Set the final fields for an object in that object's constructor. Do not write a reference to the object b

Re: Rethinking Literate Programming

I've always seen this to document what the system does, as a way to gather requirements. And the name used is similar to what you propose. Live Specification or Specification by Example among other names. It never occurred to me that this could be used for API documentation, and I'm a completely n

Re: Rethinking Literate Programming

puzzler and Tim, Well said, gentlemen. As someone who has been using LP heavily for the past two years, I have certainly reaped many if not most of the benefits regularly argued in its favor (and of course, I've wrestled with all the usual tooling issues as well). While I agree with puzzler t

Re: Rethinking Literate Programming

With respect to "documentation" of open source software... "You keep using that word. I don't think it means what you think it means." -- "The Princess Bride" The notion that "reading the code" is the ultimate truth for "documentation" is based on a misunderstanding at so many levels it is hard t

count not supported on this type

I try to make this assigment : Write the function (contains-duplicates? sequence) that takes a sequence as a parameter and returns true if sequence contains some element multiple times. Otherwise it returns false. So I did this : (defn contains-duplicates? [a-seq] (let [element (fn element

Headless server, no GUI, no idea

Hi, What should my approach be, if I want my headless server to run a client program that uses the client GUI? How can my server provide the same resources as a local client, to use GUI objects? I have a Clojure program that opens a file dialog on the client. It works fine, until I try to ru

[ANN] Hermod a core.async message passing library

Although still in pre-1.0, I'm happy enough with a library I've been working on to make an official release. Hermod is a network-aware message passing library built on core.async. The details are best explained by the project's README: https://github.com/halgari/com.tbaldridge.hermod There are m

Must hear...

There is a 3rd part to this series. Enjoy... Robert Lefkowitz -- The Semasiology of Open Source (part 3) http://daviding.wordpress.com/2007/10/22/robert-lefkowitz-the-semasiology-of-open-source-part-iii-oscon-2007-it-conversations-20060726/ Tim -- You received this message because you are subs

Re: Headless server, no GUI, no idea

This sounds more like a problem with remote access to X-Windows (the Unix graphical back-end) than a Clojure-specific problem. You might find some helpful answers in Ubuntu docs, forums, or chat rooms. -S On Friday, May 9, 2014 6:57:26 AM UTC-4, stiffyrabbit jr wrote: > > Hi, > > What should my

Re: Headless server, no GUI, no idea

I'm not exactly clear what you're trying to do, but I had similar problems with running Seesaw tests on Travis CI. Here's the settings I used to work around it: https://github.com/daveray/seesaw/blob/develop/.travis.yml Hope this helps, Dave On Fri, May 9, 2014 at 10:52 AM, Stuart Sierra wr

Re: count not supported on this type

Your function is essentially: (= (map count coll) 1) So you're applying the function "count" to each element in the collection. Let's say your collection is: [1 2 3] Then you're trying to evaluate: [(count 1) (count 2) (count 3)] Clojure is raising an exception that says "I can't

Re: count not supported on this type

oke, Then I have to fnd another way to see how many times a number is present in a collection. I thought count could do that. Roelof Op vrijdag 9 mei 2014 20:24:29 UTC+2 schreef James Reeves: > Your function is essentially: > > (= (map count coll) 1) > > So you're applying the function

[ANN] lein-modules 0.3.1

I just released version 0.3.1 of lein-modules [1]. I've fixed a lot of bugs, added one feature, and slightly changed the behavior since the last time I announced a release. What is it? It's a Leiningen plugin that lets you treat a set of related projects stored in a single SCM repository as an

Using Java's XML Digital Signature API -> Clojure

Hi all, I've noticed there's no Clojure library for doing XML Digital signatures. So I'll probably put one out there, if I can completely solve this problem. Using Java's *XML Digital Signature API *,

Re: Managing State Changes, using Component

Sorry, just reading this now. I've pivoted on that project, and that code is no longer around. We were going to store analytics data in that atom, but instead are going to do JVM and other kinds of profiling. But if you look at my first message, component *:a* would have had the atom. The *:updat

Expected inconsistency between set and map w/ ArrayList?

Is this behavioral change in Clojure 1.6.0 expected? Under 1.6.0, a set and a map seem to treat a java.util.ArrayList differently with respect to its equivalence to a vector. https://gist.github.com/duelinmarkers/7c9f84cfc238e5d37a09 user=> (-> {} (assoc [1 2] "vec") (assoc (java.util.ArrayList. [

Expected inconsistency between set and map w/ ArrayList?

Perhaps this is a consequence of the hashing changes in 1.6. (http://dev.clojure.org/display/design/Better+hashing) -- 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

Re: data.xml namespace aware?

Thanks Herwig. I take it test_namespace.cljis the interesting file. Given the example in my previous message, is there a more idiomatic way of defining namespaces with this proposal? Thanks again

Re: Headless server, no GUI, no idea

Indeed. The OP contacted me offlist and I suggested running a virtual framebuffer for X11 and sent them a link. Sean On May 9, 2014, at 10:52 AM, Stuart Sierra wrote: > This sounds more like a problem with remote access to X-Windows (the Unix > graphical back-end) than a Clojure-specific probl

Re: Managing State Changes, using Component

If you only created the atom once, the value of the atom would be the same no matter where you dereferenced it. If you're seeing two different atoms, then the code that created the atom must have been executed more than once. Without seeing your code it's impossible to know for sure how that occur

Re: Expected inconsistency between set and map w/ ArrayList?

Mike is correct. This change in behavior is due to the hashing changes in Clojure 1.6. See the comments on ticket http://dev.clojure.org/jira/browse/CLJ-1372 for some discussion of whether this is considered a bug. It appears that perhaps the hash consistency is not promised for mutable objects,

Re: Managing State Changes, using Component

I can see this being the case. Nominally, my component looks like this. Before I log a bug however, let's see first, if anyone is seeing this behaviour. (ns a (:require [com.stuartsierra.component :as component] [taoensso.timbre :as timbre])) (defrecord A [env] component/Lif

Re: Using Java's XML Digital Signature API -> Clojure

This refheap link is, so far, the Clojure code that generates the XML in fig.3. Tim Washington Interruptsoftware.com On Fri, May 9, 2014 at 5:29 PM, Timothy Washington wrote: > Hi all, > > I've noticed there's no Clojure library fo

A video on programming

"Literacy, Programming, and Open Source" by Robert M Lefkowitz http://www.youtube.com/watch?v=JxjTsQtxn8A -- 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 a

Nominalization

I am new to functional programming and caught myself reading “reduce” as “the reduction of.” Do you experienced Clojure programmers find yourselves thinking in terms of nouns instead of verbs? (Non-temporal expressions as opposed to actions?) Some of the operations reinforce this way of thinkin

Re: Headless server, no GUI, no idea

And I thank you both. I was advised to set the display: *export DISPLAY=:99.0*I'm just wrestling with the line *sh -e /etc/init.d/xvfb start* which returns: sh: 0: Can't open /etc/init.d/xvfb My machine reports that *xvfb is already the newest version but, *I get the same response. I se

Re: Headless server, no GUI, no idea

Are you running this as a superuser? (su or sudo) On Sat, May 10, 2014 at 1:03 AM, stiffyrabbit jr < deliverebay...@googlemail.com> wrote: > And I thank you both. I was advised to set the display: > > > > *export DISPLAY=:99.0*I'm just wrestling with the line > > *sh -e /etc/init.d/xvfb start*

Re: Nominalization

Never thought of it that way, I always verb the noun. Did you learn about reductions, yet? It's clear that the name corresponds to the intended output at least in that case. On Friday, May 9, 2014, Mike Fikes wrote: > I am new to functional programming and caught myself reading “reduce” as > “t