I'm just following what seemed to be a convention -
https://github.com/clojure/core.unify/blob/master/src/main/clojure/clojure/core/unify.clj
On Sun, Oct 9, 2011 at 7:17 PM, Alan Malloy a...@malloys.org wrote:
On Oct 9, 12:31 pm, David Nolen dnolen.li...@gmail.com wrote:
I've removed some
I've come up with some better reasons to return nil.
- smaller generated code size
- cleaner implementation
of which the latter is the most significant.
While we're on the topic of conventions, I think the most important
convention match is breaking
is using the destructuring syntax to mean
It's precisely the behaviour you would get by calling String.valueOf(null) in
java. Nulls match to the most specific parameter type in a given hierarchy,
and in this case, that would be char[] instead of Object. If the param
types were not in the same hierarchy, say char[] and String, then
Hello all.
I have made a small clojure wrapper around the jorbis library from
jcraft (for decoding ogg vorbis compressed audio).
I'm planning to maybe use it as a component in a small game library
but I made it as a stand alone library because it could really be
useful in any app dealing with
On Sunday, 9 October 2011 19:49:17 UTC-7, Stuart Sierra wrote:
Clojure unless somebody clever can make one that's actually *faster* than
the best Java lib.
Here ya go: https://github.com/ataggart/clojure.data.codec
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https://github.com/clojure/clojure/blob/1.3.x/changes.txt I think.
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A good book to learn lisp macros, is On Lisp from Paul Graham. This
book really cover advanced topics and concepts, and has many chapters
related to macros.
The book is freely available in online format from Paul Graham
Website: http://www.paulgraham.com/onlisp.html
On Oct 6, 1:02 pm, Michael
On Sunday, 9 October 2011 19:49:17 UTC-7, Stuart Sierra wrote:
Clojure unless somebody clever can make one that's actually *faster* than the
best Java lib.
Here ya go: https://github.com/ataggart/clojure.data.codec
I owe you a beer for the offset and length args. Thanks!
Stu
Stuart
Cool! That would make a sweet example of Clojure is fast at primitives.
-S
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Thanks for your clarification.
On Oct 9, 11:47 pm, Stephen Compall stephen.comp...@gmail.com wrote:
On Sun, 2011-10-09 at 07:36 -0700, jingguo wrote:
Does clojure has a API for this? I have checked clojure.core and
clojure.string.
It seems that clojure does not have a counterpart for
On Sun, Oct 9, 2011 at 11:19 PM, Ambrose Bonnaire-Sergeant
abonnaireserge...@gmail.com wrote:
On Mon, Oct 10, 2011 at 3:31 AM, David Nolen dnolen.li...@gmail.comwrote:
- return nil instead of throwing if no match found to mirror the behavior
of cond
I don't like this.
I'm definitely
On Mon, Oct 10, 2011 at 3:46 AM, Ambrose Bonnaire-Sergeant
abonnaireserge...@gmail.com wrote:
While we're on the topic of conventions, I think the most important
convention match is breaking
is using the destructuring syntax to mean something less generic by default
(only vectors).
(match
Would supporting other data structures make it slower when using vectors, or
only when using non-vector seq's?
If it makes it substantially slower across the board, personally I'd still like
core.match to support all of clojure's built in data structures; but I could
understand why people
If not, is there a lib I can leverage for this on 1.3?
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Your input isn't a legal Clojure form, and the correlation between
input and output is difficult to spot, so it is hard to guess what you
mean.
Sorry about the malformed map, a correctly formed map follows:
{a {2011 [[a 2011 ari] [a 2011 dan]], 2010 [[a 2010
jon]]}}
Now as for the
On Mon, Oct 10, 2011 at 10:28 PM, Rob Lally rob.la...@gmail.com wrote:
Would supporting other data structures make it slower when using vectors,
or only when using non-vector seq's?
If we use :seq pattern matching, it will use first/rest. This can be very
expensive. Vectors will take a
How about:
`match` - defaults to :seq, returns nil
`match-debug` - defaults to :seq, w/ error checking, w/ comprehensiveness
check
`matchv` - defaults to :vector
Ambrose
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On Fri, Oct 7, 2011 at 4:20 PM, Stuart Halloway
stuart.hallo...@gmail.com wrote:
Trying to be a little bit constructive here, in case I come across as
complaining, I took the source for c.d.json and put it into a
leiningen project, enabled warn on reflection, and found that several
cases of
On Mon, Oct 10, 2011 at 11:19 AM, Lars Nilsson chamael...@gmail.com wrote:
On Fri, Oct 7, 2011 at 4:20 PM, Stuart Halloway
stuart.hallo...@gmail.com wrote:
Trying to be a little bit constructive here, in case I come across as
complaining, I took the source for c.d.json and put it into a
On Mon, Oct 10, 2011 at 10:28 AM, Rob Lally rob.la...@gmail.com wrote:
If it only makes the non-vector seq case slower, I'd certainly make that an
available option - people are going to have to manually convert other
sequences into vectors anyway which creates a coding overhead and also makes
On Mon, Oct 10, 2011 at 10:56 AM, Ambrose Bonnaire-Sergeant
abonnaireserge...@gmail.com wrote:
How about:
`match` - defaults to :seq, returns nil
`match-debug` - defaults to :seq, w/ error checking, w/ comprehensiveness
check
`matchv` - defaults to :vector
Ambrose
I think we can just
On Mon, Oct 10, 2011 at 06:57, David Nolen dnolen.li...@gmail.com wrote:
On Sun, Oct 9, 2011 at 11:19 PM, Ambrose Bonnaire-Sergeant
abonnaireserge...@gmail.com wrote:
On Mon, Oct 10, 2011 at 3:31 AM, David Nolen dnolen.li...@gmail.com wrote:
- return nil instead of throwing if no match found
On Mon, Oct 10, 2011 at 12:08 PM, Daniel Pittman dan...@rimspace.netwrote:
On Mon, Oct 10, 2011 at 06:57, David Nolen dnolen.li...@gmail.com wrote:
On Sun, Oct 9, 2011 at 11:19 PM, Ambrose Bonnaire-Sergeant
abonnaireserge...@gmail.com wrote:
On Mon, Oct 10, 2011 at 3:31 AM, David Nolen
I think I got the permissions fixed...
-S
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Patch welcome... ;)
-S
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Cool!
I did some quick-and-dirty benchmarking of it this afternoon (GMT+2)
and got between 50 and 70 MiB/s on my machine. The Apache
implementation used for comparison by the unit tests came in at
between 30 and 40 MiB/s. Impressive.
I've since seen perf_base64.clj go in, though I'm not clear
I see about a 50% increased throughput over apache commons-codec as well. I
use the perf-base64 ns generate input data and output timing files to keep
track of changes to the performance over time, lest a regression creep in.
I'll add some documentation if you want to play with it.
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I've just been playing around a bit with match so please forgive me if I've
missed some prior discussions regarding issues that are considered settled.
One of my first attempts was to match a vector of two of the same thing using a
pattern like [a a]. I naively thought that would imply an
I've already figured out how it works and have found the same 2:1
ratio. (This time on my 1.4GHz MacBook Air; The previous tests were on
a 2.4 GHz Core2Duo running Linux.)
When I did the quick-and-dirty benchmarking this afternoon I used
larger random inputs (1 to 8 MiB) allowing me to calculate
On Mon, Oct 10, 2011 at 2:43 PM, Steve Miner stevemi...@gmail.com wrote:
I've just been playing around a bit with match so please forgive me if I've
missed some prior discussions regarding issues that are considered settled.
One of my first attempts was to match a vector of two of the same
match-let looks good. I see that you are Clojure contributor - I'm more than
happy to include this.
Yes, I'm a registered contributor. It's all yours.
I'll take a look at the code and see if I can fix things for myself regarding
the implied equality constraints and guard clauses.
By the
On Mon, Oct 10, 2011 at 3:42 PM, Steve Miner stevemi...@gmail.com wrote:
match-let looks good. I see that you are Clojure contributor - I'm more
than happy to include this.
Yes, I'm a registered contributor. It's all yours.
I'll take a look at the code and see if I can fix things for
I think that the following partially answers my own question and that it
provides a way to get decent multicore performance for collections of
non-uniform but compute-intensive tasks through a simple, pmap-like interface.
But I'm not sure if it's the best approach and I'd like some feedback.
Hi!
Initially I created a mess of interlinked functions for rendering HTML
via hiccup.
I have few pages with parts that may vary or may be present or not based
on whether the user is logged in as admin.
With the desire to test for the role in a single place and for composing
the views in
A weakness of my pmapall:
#Exception java.lang.Exception: Can't await in agent action
Which means, I think, that I can't call pmapall within a function that I pass
to pmapall. Unfortunate.
Is there a better way?
-Lee
PS to see these exceptions one must change the call to agent in my
I am using a record to wrap a number of java classes, which I then
access various properties on. I am trying to avoid reflection so I
type have type hinted, however when accessing the values in the record
the type hints are lost. It might look something like this
(defrecord Rec [^Integer i])
And what does it mean to clojurescript?
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Hi Lee,
On Wed, Sep 28, 2011 at 12:43 AM, Lee Spector lspec...@hampshire.edu wrote:
On Sep 27, 2011, at 5:44 PM, David Powell wrote:
I see that there was a recent fix made to Incanter:
Fixed typo in :lower-tail? keyword.
This was causing the complement of the p-value to be returned.
Hi, Nicolas, and thanks.
I'm new to clojure (I've been working through Programming Clojure), and
most of my long work life has gravitated around c, shell scripts, and perl.
That being said, I've tinkered with Lisp dialects for the past twenty-five
years (mostly elisp, scheme, and common lisp),
Hi,
There is an Incanter Hack Day taking place on Sunday at the Royal
Festival Hall in London. We'll be on the 5th floor, Blue side.
The group will begin turning up at 1000, but feel free to come a bit
later if that's too early. We'll go for some lunch somewhere close by
on Southbank when
As a language - not much exciting stuff. ClojureScript by targeting lowest
common denominator JavaScript is portable in a way that Dart is not.
I'm skeptical that Dart will see much uptake from various vendors - but only
time will tell.
David
On Mon, Oct 10, 2011 at 7:47 AM, ivo
What I have in mind is not related to Dart, but to the support of
Closure Tools from Google.
Will Dart javascript compatibility layer/javascript compilation for
non-Chrom(e)(ium) browsers include the Closure Tools Suite ?
2011/10/10 David Nolen dnolen.li...@gmail.com:
As a language - not much
On Mon, Oct 10, 2011 at 09:08:42AM -0700, Daniel Pittman wrote:
So, I have one other argument in favour of just return nil, which I
prefer:
If you just return il, I can use :else to throw fairly cheaply, and
quite visibly.
If you throw then I have to wrap any non-exhaustive pattern in a
What do the Clojure devs themselves do to keep their
dev environment productive? Use ed and a raw repl
running in two xterms? ;-) *)
Emacs inferior-lisp mode and Bash scripts. Not my first choice, but always
works.
-Stuart Sierra
clojure.com
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I am using a record to wrap a number of java classes, which I then
access various properties on. I am trying to avoid reflection so I
type have type hinted, however when accessing the values in the record
the type hints are lost. It might look something like this
(defrecord Rec [^Integer
On Mon, Oct 10, 2011 at 1:07 PM, Lee Spector lspec...@hampshire.edu wrote:
Here's my stab at doing this using agents:
(defn pmapall
Like pmap but: 1) coll should be finite, 2) the returned sequence
will not be lazy, 3) calls to f may occur in any order, to maximize
multicore processor
On Oct 10, 2011, at 7:16 PM, Phil Hagelberg wrote:
What you're really looking for is pdoseq, right? Seems like futures
might be a better building-block for this, although again Clojure's
lack of flexibility over the thread pool could easily bite you here.
No -- I want all of the returned
On Oct 10, 2011, at 4:36 PM, Ben Evans wrote:
There should be 1.2.4 (and a snapshot of 1.3.0) up on clojars now.
Could I ask you to give one of them a go, and mail your findings to
the list? We have our regular Incanter Hack Day coming up next
weekend, so if things are still b0rken for you,
I may be missing something obvious.
Midje has a checker that lets users say things like
(fact (my-computation) = (roughly 15 2))
Where the first number in `roughly` is the target number and the second is an
acceptable range around that target. Part of what the checker does in 1.2 is
this:
(defmacro plus [] (if … (resolve (symbol clojure.core/+)) (resolve
(symbol clojure.core/+'
((plus) actual delta)
On Mon, Oct 10, 2011 at 4:28 PM, Brian Marick mar...@exampler.com wrote:
I may be missing something obvious.
Midje has a checker that lets users say things like
(fact
I'd appreciate suggestions and insights on how I can collapse a nested
map with n number of keys (levels) to create a flat map which is
comprised of composite keys and a value. For example, let's say we
have:
{ a { 2011 [ [ a 2011 ari] [ a 2011 dan] ] } { 2010 [ [ a
2010 jon] ] } }
I'd
On Mon, Oct 10, 2011 at 6:07 PM, Stephen Wrobleski st...@localtoast.orgwrote:
I think a match-debug is barking up the wrong tree. If throwing an
exception
is the right thing to do to track down an unaccounted case, why make a
different macro just for a slightly different default behavior that
Here's my clojurescript function:
(defn make-select [elem-id]
(let [select (goog.ui.Select. Heading)
select-elem (d/element (keyword (str div# elem-id)))]
(.addItemAt select (goog.ui.MenuItem. Item 1) 0)
(.addItem select (goog.ui.Option. Item 2))
Base64 decoding support has been added.
http://github.com/ataggart/clojure.data.codec
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I made an alternative implementation using a thread pool and a queue, based
on the example at
http://clojure.org/concurrent_programming
In short, your pmapall and the pool-based implementation (below) both give
approximately
perfect scaling on my 4/8-core system (Intel i7 920 and HT).
Both
Interesting. I'll try some of your suggested tests to see if my pmapall all is
behaving better than I thought.
Does your pmap-pool permit nesting? (That is, does it permit passing pmap-pool
a function which itself calls pmap-pool?). If so then that would be a reason to
prefer it over my
Well, I figured it out. It was working just fine. The problem was
that the Options/MenuItems are added elsewhere to the dom. I didn't
have the css loading so I just didn't notice that they were at the
very bottom of the screen.
On Oct 10, 9:25 pm, Eric Harris-Braun zippy.314@gmail.com
(def +M (first [+' 1])) seems like it should work in both versions?
On Oct 10, 4:28 pm, Brian Marick mar...@exampler.com wrote:
I may be missing something obvious.
Midje has a checker that lets users say things like
(fact (my-computation) = (roughly 15 2))
Where the first number in
On Sun, Oct 9, 2011 at 8:48 AM, Stephen Compall
stephen.comp...@gmail.com wrote:
On Fri, 2011-10-07 at 19:07 +0530, Vivek Khurana wrote:
I would prefer to have a
modules directory where each module will create a sub directory and
all files in the module sub directory expose a single namespace.
I'll post more on this later, but I wanted to point out one case where I
found that pmap was not achieving the desired level of speedup (# of
CPUs/cores) that you would initially expect, and it is not due to any
reasons that I've posted about before.
Imagine a 4-core CPU. There are 4 physical
60 matches
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