Re: Documentation tools

Hey Mark, I don't know of any publicly available tools besides autodoc. My understanding is that Zack was keeping the source to clojuredocs closed, at least for now. While I assume his extraction code is in Clojure, the actual clojuredocs presentation code is a Ruby on Rails app [1] Whether autod

Re: defrecord with default values

Hi, first of all we should start with the form we finally want to have: (defrecord Foo [a b c]) (defn make-Foo [& {:keys [a b c] :or {a :x c :z}}] (Foo. a b c)) ; Use as: (make-Foo :b :f) => (Foo. :x :f :z) The only annoying part is the boilerplate of defining make-Foo. What we would like

Re: Lisp/Scheme Style Guide

An interesting candidate for this is the current clojure.contrib.pprint tool. It should be adapted to not only grok clojure forms, but also strings, of course (and this may not be that easy), so that nothing in the source code is lost during the parsing ... 2010/9/6 : > It would be _nice_ to have

Re: clojure Image/video processing?

Thank you everyone for your time and great advice. Thank you Wilson MacGyver, for recommending jmagick. I actually already use it's brother im4java (http://im4java.sourceforge.net/) for great justice already and forgot to mention it. It does alright for basic image manipulation. The reason I've

Re: JSON lib of choice?

Hi, On 7 Sep., 04:50, Wilson MacGyver wrote: > For JSON, are you using clojure.contrib.json or clj-json? Why? I use clj-json. Mainly because it is brought in by another dependency, anyway. There were some comparisons, which claimed it to be quite fast. But you know me: I'm an armchair specialis

Re: Documentation tools

Mark- ATM, autodoc is your best bet for automatically generating documentation from your source files. The ClojureDocs lib analyzer codebase is pretty much a ns / var metadata extraction tool, similar to autodoc. Unfortunately out of the five requirements you listed [1] we only (automatically) t

Re: JSON lib of choice?

We use org.danlarkin.json, and it's never let us down. -Phil On Sep 6, 2010 7:50 PM, "Wilson MacGyver" wrote: > I figure enough time has passed that I want to bring this up again. > > For JSON, are you using clojure.contrib.json or clj-json? Why? > > Thanks > > -- > You received this message bec

JSON lib of choice?

I figure enough time has passed that I want to bring this up again. For JSON, are you using clojure.contrib.json or clj-json? Why? Thanks -- 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 N

Re: clojure Image/video processing?

On Mon, Sep 6, 2010 at 5:45 PM, Sean Grove wrote: > On Sep 6, 2010, at 2:57 PM, Robert McIntyre wrote: > > I was wondering if anyone has used clojure for image/video processing > and how that has worked out. > > We've been rolling our own, either using Apple's Core Image framework or our own Open

defrecord with default values

Disclamer: I'm a Clojure noob, so bad code follows... I have been putzing around with implementing a Simple Temporal Network (a graph structure for scheduling problems) in Clojure. In the process, I wanted to generate records that had default values. I ran into this blog post by cemerick (http://c

Re: clojure Image/video processing?

On Sep 6, 2010, at 2:57 PM, Robert McIntyre wrote: > I was wondering if anyone has used clojure for image/video processing > and how that has worked out. > Images: For image processing, I've just been using the java2d api, a la http://www.javaworld.com/javaworld/jw-09-1998/jw-09-media.html?page=

Re: Lisp/Scheme Style Guide

It would be _nice_ to have a default that was the baseline format. The Canon of Clojure Conventional Conformity (). If an org or project wanted to have a different format, they could supply it as a plugin to the clojure-fmt tool. (set-format "local-conventions") When the format gets applie

agents, await and Swing thread

Hello, I've got a concurrency problem and it's not really clear to me how to solve it. I have a Swing GUI doing a search in background with agents and the results are displayed one after the other, also in background. Here is, largely simplified, how I do it: (defvar- *end-search* (atom false))

Re: clojure Image/video processing?

If by processing image you mean like resizing, etc. I use jmagick http://www.jmagick.org/index.html On Sep 6, 2010, at 5:57 PM, Robert McIntyre wrote: > I was wondering if anyone has used clojure for image/video processing > and how that has worked out. -- You received this message because yo

clojure Image/video processing?

I was wondering if anyone has used clojure for image/video processing and how that has worked out. I've spent a long time on this since clojure 1.0 and have gone through many different (java) libraries trying to find something that's truly awesome. I've tried: Images: ImageJ (lots of plugins bu

Re: Documentation tools

On Mon, Sep 6, 2010 at 2:51 AM, Tim Daly wrote: > The literate programming discussion centered around the question > "what should be the state of the art in clojure documentation", > not "what is the state of the art in clojure documentation". I brought up literate programming as an example of a

Re: "Binding" and temporary global state

I am a bit puzzled, I did a quick test and rebinding using a declare should work (outside of your sample code). I have a reminiscence of a similar problem I encountered before version 1.0 and used a def to solve my problem at the time. But the small test I just made with 1.2 is working. There's a

Re: "Binding" and temporary global state

Interesting results. By putting (println compiled-ops) it worked, but not by putting it in a doall. (same error) Changing my declares to defs did the trick did though and learning about bound-fn* was also a serious mind-expander for me right now too. Thanks to both of you! On Sep 6, 4:57 pm, Ja

Re: "Binding" and temporary global state

Oups, forget about my last post, I was under the impression you could not bind to a declared thing... wrong was I... Luc P. lprefonta...@softaddicts.ca wrote .. > Hi Cameron, > > Use def or defvar (if you use contrib.def) to create an instance of *macros*. > Declare is used for forward referenc

Re: "Binding" and temporary global state

Hi Cameron, Use def or defvar (if you use contrib.def) to create an instance of *macros*. Declare is used for forward references (when you reference something before declaring it) so the compiler knows that your code is sane but it does not "define" anything by itself. Yes, it may look a bit conf

Re: "Binding" and temporary global state

Cameron Pulsford wrote: > Is there a way to do this? Besides cleaning up function signatures is > this a premature optimization to begin with? > > (declare *macros*) > > (defn macro-expand [tokens] > (map #(get *macros* % %) tokens)) > > (defn compile-op [op] > (macro-expand op)) > > (defn ass

"Binding" and temporary global state

Hello all, here is an extremely reduced version of a problem I'm not sure how to work around. (It's going to be a toy assembly language if anyone's wondering) When I call assemble in the following code I get the error: "java.lang.IllegalStateException: Var reader/*macros* is unbound." I'd like *mac

Re: Mapping a function to a map

Different reactions: 1. The reduce solution is O(n .log n) + time of mapping elements, as inserting in a map is O(log n). A tree with n leafs and arity at least binary is of size at most 2n. So a map on a map could be done in O(n) + time of mapping elements, but it would need a bit of support fro

Re: Mapping a function to a map

On Mon, Sep 6, 2010 at 10:47 AM, Robert McIntyre wrote: > Why is it that clojure maps aren't lazy though? > Wouldn't that be just as useful an abstraction as lazy sequences? > Aren't map really just lists of pairs in the end anyway? > how can laziness benefit map usage pattern ? efficient search r

Re: Mapping a function to a map

Why is it that clojure maps aren't lazy though? Wouldn't that be just as useful an abstraction as lazy sequences? Aren't map really just lists of pairs in the end anyway? --Robert McIntyre On Mon, Sep 6, 2010 at 1:19 PM, Michał Marczyk wrote: > On 6 September 2010 18:49, Robert McIntyre wrote:

Re: Mapping a function to a map

On Sep 6, 11:40 am, Nicolas Oury wrote: > is there a function to map a function to all values in a map, keeping > the same keys? I like "reduce" because you can modify both the key and the value, and even choose to omit or add certain keys: (reduce (fn [[k v] m] (assoc m k (...do stuff with

Re: Mapping a function to a map

On 6 September 2010 18:49, Robert McIntyre wrote: > I thought that since into uses reduce, it would be lazy, but I was wrong. > reduce just plows through everything with a non-lazy recursion. Well, there's another reason in that the concept of a lazy map is problematic. In Clojure, at any rate, e

Re: Mapping a function to a map

On Mon, Sep 6, 2010 at 10:09 AM, Justin Kramer wrote: > reduce returns a single value; there's no collection to make lazy. > There is reductions, which returns the intermediate results of reduce > as a lazy sequence. > if f = cons in 'reduce f a seq', there is a collection. Though in this case, on

Re: Mapping a function to a map

reduce returns a single value; there's no collection to make lazy. There is reductions, which returns the intermediate results of reduce as a lazy sequence. Justin On Sep 6, 12:49 pm, Robert McIntyre wrote: > I thought that since into uses reduce, it would be lazy, but I was wrong. > reduce just

Re: Mapping a function to a map

On Mon, Sep 6, 2010 at 9:49 AM, Robert McIntyre wrote: > I thought that since into uses reduce, it would be lazy, but I was wrong. > reduce just plows through everything with a non-lazy recursion. > > Why is reduce not lazy? > reduce in clojure == foldl in Haskell and as far as I know, there are

Re: Mapping a function to a map

I thought that since into uses reduce, it would be lazy, but I was wrong. reduce just plows through everything with a non-lazy recursion. Why is reduce not lazy? --Robert McIntyre On Mon, Sep 6, 2010 at 12:37 PM, Michał Marczyk wrote: > On 6 September 2010 18:29, Robert McIntyre wrote: >> walk

Re: Mapping a function to a map

On 6 September 2010 18:29, Robert McIntyre wrote: > walk is good but it's not lazy. If you want to preserve laziness you can do: This won't be lazy, because (into {} ...) is a strict operation. I'd suggest something like (defn mmap [f m] (zipmap (keys m) (map f (vals m f is expected to c

Re: Mapping a function to a map

walk is good but it's not lazy. If you want to preserve laziness you can do: (defn map-vals "transform a map by mapping it's keys to different values." [f m] (into {} (map (fn [[key val]] [key (f val)]) m))) This is also nice because you can then write functions whose arguments are [val] in

Re: Mapping a function to a map

(clojure.walk/walk (fn [[key val]] [key (* 2 val)]) identity {:a 1 :b 2}) On Mon, Sep 6, 2010 at 9:26 PM, Sunil S Nandihalli < sunil.nandiha...@gmail.com> wrote: > Nicolas > I am not sure of the performance characteristics.. but you may want to look > at > > *(clojure.walk/walk #(do (println "in

Re: Mapping a function to a map

Nicolas I am not sure of the performance characteristics.. but you may want to look at *(clojure.walk/walk #(do (println "inner : " %) %) #(do (println "outer : " %) %) {:a 1 :b 2}) * Best regards, Sunil. On Mon, Sep 6, 2010 at 9:10 PM, Nicolas Oury wrote: > Dear all, > > is there a function to

Mapping a function to a map

Dear all, is there a function to map a function to all values in a map, keeping the same keys? Reducing from the seqed map seems a bit slower that what could be done directly... Best, Nicolas. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post

Re: external clojure lib >

Leinengen makes the process pretty painless, see: http://github.com/technomancy/leiningen On Sep 6, 5:20 am, Abraham Varghese wrote: > Dear all , > > How to get external clojure libs workng in my system? like > clojure.contrib , etc? > > Thanks in advance > AV -- You received this message beca

Re: external clojure lib >

when I say "is in path" ... I meant that you CLASSPATH variable has this jar file in it.. On Mon, Sep 6, 2010 at 8:30 PM, Sunil S Nandihalli < sunil.nandiha...@gmail.com> wrote: > Hi Abraham, > Make sure that the jar file of the "external" library you are referring to > is in path. If you are d

Re: matching with wild-cards in clojure multi-methods

thanks Meikel for the suggestion .. I never thought of that .. (or actually didn't know about it).. I think that helps.. Sunil. On Mon, Sep 6, 2010 at 8:19 PM, Meikel Brandmeyer wrote: > Hi, > > On 6 Sep., 16:43, Meikel Brandmeyer wrote: > > > (defmulti foo > > your-dispatch-fn-here > > :hi

Re: external clojure lib >

Hi Abraham, Make sure that the jar file of the "external" library you are referring to is in path. If you are developing clojure code .. I would strongly advice you to use leiningen which takes care of a lot of these things for you. Btw. what is the "development environment" you are using? .. Try

Re: matching with wild-cards in clojure multi-methods

Hi, On 6 Sep., 16:43, Meikel Brandmeyer wrote: > (defmulti foo >   your-dispatch-fn-here >   :hierarchy your-hierarchy) Woops. You should use an atom for the hierarchy or use the Var in the call above: #'your-hierarchy. An atom would allow later modification of the hierarchy. Sincerely Meikel

Re: Announcement: secrets of monad fu, revealed

"Easy to grok" is music to my ears. I imagine most people who read my post would skip the proofs, and that is just fine. The proofs are gruntwork. I wouldn't want the tedious details to obscure the idea of the monad, which is quite elegant once you get your head around it. On Mon, Sep 6, 2010 at

Re: matching with wild-cards in clojure multi-methods

Hi, On 6 Sep., 06:14, Sunil S Nandihalli wrote: > (defmethod foo [_          :hello    _         _   ] (str "I'm method 1")) > (defmethod foo [:world   _         :us       _  ] (str "I'm method 2")) > (defmethod foo [:city       _         :us      _  ] (str "I'm method 3")) You can use qualifie

Re: matching with wild-cards in clojure multi-methods

Thanks Mark for you reply. Well I realized we can do that .. but I feel it would be more expressive and readable if I could do the wild-card like pattern matching when I am defining the method. Sunil. On Mon, Sep 6, 2010 at 9:25 AM, Mark Rathwell wrote: > > You can add essentially one more level

Re: matching with wild-cards in clojure multi-methods

Hi Mark, Let us say my dispatch function always returns a vector of 4 keywords. now I want to write my methods in the following way.. (defmethod foo [_ :hello_ _ ] (str "I'm method 1")) (defmethod foo [:world _ :us _ ] (str "I'm method 2")) (defmethod foo [

Re: matching with wild-cards in clojure multi-methods

It looks like the matchure does this kind of thing .. :) .. I guess somebody has already written a library to do what I wanted ... On Mon, Sep 6, 2010 at 9:44 AM, Sunil S Nandihalli < sunil.nandiha...@gmail.com> wrote: > Hi Mark, > Let us say my dispatc

Re: Announcement: secrets of monad fu, revealed

I liked it. Easy to grok. I had some vague idea that monads are like "overloading the pipe operator in a function pipeline", but now it's much clearer. I know some abstract algebra, though not category theory. I skipped the proofs, didn't care about those. -- Eivind Magnus Hvidevold Cell: +47 9

external clojure lib >

Dear all , How to get external clojure libs workng in my system? like clojure.contrib , etc? Thanks in advance AV -- 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

external clojure lib >

Dear all , How to get external clojure libs workng in my system? like clojure.contrib , etc? Thanks in advance AV -- 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: Documentation tools

Is it feasable to create a literate haskell like alternate format for Clojure? 2010/9/6 Tim Daly : > See http://en.wikipedia.org/wiki/Axiom_computer_algebra_system > which is "in process" to become a fully literate computer > algebra system. 20 volumes so far and a lot of documentation > still to

Re: API for ClojureDocs.org

One of the most important things for me is the access to code examples. Every example could be split in multiple parts. (comment, function and result part for example) Editors (Emacs + Slime) could display these in a nicely and decent manner while developing. Also, bulk-get could be helpful (to ma

Re: Documentation tools

See http://en.wikipedia.org/wiki/Axiom_computer_algebra_system which is "in process" to become a fully literate computer algebra system. 20 volumes so far and a lot of documentation still to come. Once a system gets larger than one person's head (e.g. Rich's) then the question of "why" becomes in

Re: Documentation tools

To have a good idea of how this can work, see Literate Haskell 2010/9/6 Tim Daly : > The literate programming discussion centered around the question > "what should be the state of the art in clojure documentation", > not "what is the state of the art in clojure documentation". > > If you're looki

Re: Documentation tools

The literate programming discussion centered around the question "what should be the state of the art in clojure documentation", not "what is the state of the art in clojure documentation". If you're looking for API documentation then literate programming is the wrong tool. An API would document

Re: API for ClojureDocs.org

On Sep 3, 2:11 am, Lee Hinman wrote: > working on the API for ClojureDocs.org in the coming future. I was > hoping to get some feedback regarding what people wanted to see for an > API for ClojureDocs: > Any other feedback is highly appreciated :) when i added examples, i thinked, that plain te