inheritance when extending goog library

I want to add a callback for goog.ui.Popup to call when it's closed. The latest version of the closure library supports adding callbacks (http://closure-library.googlecode.com/svn/docs/ closure_goog_disposable_disposable.js.source.html#line209), but the version that Clojurescript uses doesn't. The

fileseq modifiers - :min-depth, :max-depth ?

Hi, not sure if this is considered too frivolous somehow but I've thought many times how nice it would be to modify a fileseq call by using a min-depth or max-depth modifier rather constructing a filter. Depth would refer to the levels of the underlying treeseq returned. So min-depth=0,max-dept

Re: Core.logic performance of looping over a list with tabling

On Saturday, September 29, 2012 11:10:38 PM UTC+2, David Nolen wrote: > > On Wed, Sep 26, 2012 at 9:20 AM, Reinout Stevens > > > wrote: > >> Hi, >> >> >> I'm the author of a DSL that allows reasoning over paths throughout >> graphs using core.logic ( https://github.com/ReinoutStevens/damp.qwal

Re: Core.logic performance of looping over a list with tabling

Looking into it. On Monday, October 1, 2012, Reinout Stevens wrote: > > > On Saturday, September 29, 2012 11:10:38 PM UTC+2, David Nolen wrote: >> >> On Wed, Sep 26, 2012 at 9:20 AM, Reinout Stevens wrote: >> >>> Hi, >>> >>> >>> I'm the author of a DSL that allows reasoning over paths throughout

Re: Is Slick feasible in Clojure?

I've thought about this as well. Coming from the .NET world I'm quite familiar with the Linq.Expression namespace. I too have wondered about this. For those who are not familiar with how IQueryable works in Linq, it's something like the following (in clojure): (def query (q (db :people)

Re: Is Slick feasible in Clojure?

On Mon, Oct 1, 2012 at 4:45 PM, Timothy Baldridge wrote: > I've thought about this as well. Coming from the .NET world I'm quite > familiar with the Linq.Expression namespace. I too have wondered about > this. For those who are not familiar with how IQueryable works in Linq, > it's something like

Re: Is Slick feasible in Clojure?

> Not to nitpick, but Linq to XML is based on Linq to objects entirely (no > IQueryable, juste vanilla IEnumerables). > You're correct. > To my - naive - knowledge of clojure macros, writing an provider in > clojure would be a lot easier than it is in C# (or even with F# quotations). > > I woul

Re: Is Slick feasible in Clojure?

Il giorno lunedì 1 ottobre 2012 16:45:44 UTC+2, tbc++ ha scritto: > > I've thought about this as well. Coming from the .NET world I'm quite > familiar with the Linq.Expression namespace. I too have wondered about > this. For those who are not familiar with how IQueryable works in Linq, > it's

Re: Playing with clojure-encog, Machine-Learning wrapper

Hey, thanks for responding. See responses inlined. On Mon, Oct 1, 2012 at 4:24 AM, Jim - FooBar(); wrote: > I've always found this page very good : > > http://www.doc.ic.ac.uk/~nd/surprise_96/journal/vol4/cs11/report.html > > generally, the weight of a connection is adjusted by an amount > prop

Re: Playing with clojure-encog, Machine-Learning wrapper

Hmmm...I am not sure I follow... the error is simply (- target actual). Then you take the square of that difference (2 reasons for that) and there you have the error per neuron at the output layer. Then you simply add them up to get the entire network's error. so far so good... the tricky bit

Regarding Starting Clojure

I decided to quickly compare the website experience of starting Clojure and starting Scala. I do a Google search for Clojure I decide to try the first link, Clojure.org There's some basic information. I follow the somewhat obscure link halfway down the side, "Getting Started" Ok, that looks prom

Re: Playing with clojure-encog, Machine-Learning wrapper

Hey, thanks for these. I'll take the evening to read through them. It's the gradient descent calculation that I find to be convoluted. I understand the concept. But I haven't seen a clear example of how that's done. That's what I was trying to nail down with that output neuron example. And reading

Re: Transforming an ugly nested loop into clojure code

I wrote a much better example in order to show what am I trying to do. Of course, the following is a simplified version of the actual code in order to make things easier for everybody. (def my-data [{:area "Somewhere" :warehouses > >[{:warehouse "W54321" :containers > >

Re: Transforming an ugly nested loop into clojure code

You appear to be running over the map purely for side-effects, therefore off the top of my head something like: (defn my-func [data] (doseq [area data warehouse (:warehouses area) container (:containers warehouse) box (:boxes container)] (if-not (empty? (:item

Re: Regarding Starting Clojure

On Mon, Oct 1, 2012 at 4:13 PM, aboy021 wrote: > The getting started issue is an ongoing problem for Clojure. It's an issue > that keeps coming up in the surveys and on the mailing list. Other languages > are doing it really well, Scala is just a convenient example. What does the > Clojure communi

Re: Transforming an ugly nested loop into clojure code

Thank you Gaz for your reply. You are correct about the side effects. I will go through your example more carefully and give it a go. It definitely looks more promising than what I got :) On Tuesday, October 2, 2012 1:22:44 AM UTC+3, Gaz wrote: > > You appear to be running over the map purely fo

Re: Regarding Starting Clojure

Probably they wouldn't, but that's not the point. The clojure community is doing something wrong for providing a coherent beginner experience. Maybe we aren't good at encouraging people to contribute documentation. Or the composability of Clojure leads to small "library islands" without much commu

Which power function is right for Clojure?

(ns power.examples) (defn non-acc-pow [base exp] (if (zero? exp) 1 (* base (non-acc-pow base (dec exp) (defn acc-pow [base exp] (letfn [(loop [base exp acc] (if (zero? exp) acc (recur base (dec exp) (* base acc] (loop base exp 1)))

Re: Which power function is right for Clojure?

It depends. Are you trying to optimize for speed? Teaching a particular style of programming? Code size? Range of input values handled correctly? Time to write it? Something else? Andy On Oct 1, 2012, at 4:45 PM, Grant Rettke wrote: > (ns power.examples) > > (defn non-acc-pow [base exp]

Re: Which power function is right for Clojure?

Numeric tower has implemented pow (named expt in the library), so you could have a look at their implementation: https://github.com/clojure/math.numeric-tower/blob/master/src/main/clojure/clojure/math/numeric_tower.clj#L64 (It utilizes exponentiation by squaring to get the running time from O(n)

Re: Which power function is right for Clojure?

On Mon, Oct 1, 2012 at 4:45 PM, Grant Rettke wrote: > (ns power.examples) > > (defn non-acc-pow [base exp] > (if (zero? exp) > 1 > (* base (non-acc-pow base (dec exp) > This is not ideal for Clojure. The exponent will be limited by the stack size in Java. > > (defn acc-pow [base

Re: Which power function is right for Clojure?

On Mon, Oct 1, 2012 at 6:29 PM, Mark Engelberg wrote: > (defn efficient-pow [base pow] > (loop [n pow, y 1, z base] > (let [t (even? n), n (quot n 2)] > (cond >t (recur n y (*' z z)) >(zero? n) (*' z y) >:else (recur n (*' z y) (*' z z)) > > This is essentia

Re: Regarding Starting Clojure

Sounds like the main beef is with the official website's styling and layout. I agree its not necessarily the prettiest but all the information is there. On the other hand, there are plenty of great resources that provide a great "getting started" experience in my opinion. Just typing clojure in

Parallella - The new era of computing?

Hi, Anyone heard of the project "Parallella" yet? What do you think about it? Will it be of any interest for the clojure plattform? Kind regards, René -- You received this message because you are subscri

Problems loading Clojure core in Nutch plugin

Hi there, I am trying to implement a Nutch plugin in Clojure 1.3. It works correctly in Nutch standalone mode, but not in Nutch distributed (Hadoop) mode. I have made the plugin inherit from Nutch's HtmlParser class, as follows. --- (ns test_plugin.core) (gen-class :name test_plugin.co

Re: Clojure web framework

Frameworks have benefits which can't easily be achieved with documentation. The most obvious to me is that a framework lets you fire up a complete system of carefully curated components in no time. They also let you defer choices until you actually need to care about them. Because Clojure's lib

Re: Clojure web framework

On Sun, Sep 30, 2012 at 12:27 PM, James MacAulay wrote: > Frameworks have benefits which can't easily be achieved with > documentation. The most obvious to me is that a framework lets you fire up > a complete system of carefully curated components in no time. They also let > you defer choices unti

Re: Regarding Starting Clojure

I put together the Getting Started confluence page. I'm sure it could still be improved, but adding further to it won't really fix the problems you've noticed, and that many other people have noted. It's still on a secondary site, and Confluence doesn't really give you a lot of design options

Re: Regarding Starting Clojure

To cite some concrete examples: "Datomic" 0 hits on Clojure.org "Clojurescript" 1 hit On Oct 1, 11:09 pm, nchurch wrote: > I put together the Getting Started confluence page.  I'm sure it could > still be improved, but adding further to it won't really fix the > problems you've noticed, and t