Hi all,
I successfully use core.logic to query a custom Java graph structure.
That is, I have these core relations:
,
| (typeo g e t)
| e is a vertex or edge of graph g with type t
|
| (vertexo g v)
| v is a vertex of graph g
|
| (edgeo g e s t)
| e is an edge of graph g starting at vertex
David Greenberg dsg123456...@gmail.com writes:
Hi David,
Guzheng is a library for doing branch coverage analysis on Clojure
projects at the command line.
Hey, that's pretty cool. But it errors when being applied to my
project. I've found the bug in guzheng and already sent you a pull
For authorisation, I really like mozilla persona (previously browserid)
which I discovered from refheap. javascript lib plus an http request from
the server to validate. really simple.
https://login.persona.org/
Dave
On Friday, 26 October 2012 01:35:53 UTC+11, Stephen Compall wrote:
On
Sorry, I meant to say authentication.
On Friday, 26 October 2012 22:06:48 UTC+11, Dave Sann wrote:
For authorisation, I really like mozilla persona (previously browserid)
which I discovered from refheap. javascript lib plus an http request from
the server to validate. really simple.
Be careful with the (filter identity ...) which will also remove falses
from seqs.
(filter identity [nil 2 3 nil false true 4])
= (2 3 true 4)
Since (identity false) and (identity nil) returns respectively false and
nil they are BOTH rejected by filter.
This could do the trick:
(filter (comp
(filter (comp not nit?) [nil 2 3 nil false true 4])
-
(remove nil? [...])
On Fri, Oct 26, 2012 at 12:53 PM, kevin roth
kevin.c.zucker...@gmail.com wrote:
Be careful with the (filter identity ...) which will also remove falses
from seqs.
(filter identity [nil 2 3 nil false true 4])
= (2 3 true
Tassilo:
I've incorporated this fix and rereleased as [lein-guzheng 1.4.4] (which
will automatically pull in the latest guzheng).
Ambrose:
Guzheng works by instrumenting all code just before it's eval'ed, using
Zach Tellman's sleight library, which is essentially a way to do whole
program
You could also let every function take a map as input/output.
Then, b could return a map with key :result-b or similar.
This result would then pass through the rest of the functions and be
accessible in e.
Like this:
a ; = {:result-a ...}
b ; = {:result-b ... :result-a ...}
...
d ; = {...
I've seen this error when putting the function name *after* the docstring
instead of before in a defn.
Stathis
On Thursday, 25 October 2012 20:05:25 UTC+1, Philip Potter wrote:
Since we're wild mass guessing, I'd say from that stack trace that there's
invalid syntax in a defn's signature
It is done. data.json 0.2.1 coming to a repository near you.
http://build.clojure.org/job/data.json/77/
https://github.com/clojure/data.json/tree/data.json-0.2.1
-S
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Awesome. Thanks.
On Friday, October 26, 2012 12:30:07 AM UTC-4, Evan Mezeske wrote:
One other thing I ought to mention is that your *.cljs files need to be
arranged in an appropriate directory structure (i.e. the directories must
match the namespaces):
I avoid making explicit distinctions between false and nil in my code.
In Clojure a falsy value is either nil or false.
In interop I ensure that null and false when returned in the upper layers
are made consistent (including Boolean objects set to false).
Too much potential trouble in my
The difference between nil and false is really handy in some cases
and for many people removing nil (or keeping not-nil) values from a seq
is not removing falsy values.
I just wanted to point out the issues that may arise from a blind use of
(filter identity [...]) ;)
On Friday, October 26,
No problem, however this nuance has broader implications than just this code
snippet :)
If you pass false and nil values to a library and expect them to be processed
differently, you may end up with a big surprise.
Luc
The difference between nil and false is really handy in some cases
and
Hi,
I've cleaned up a release of Typed Clojure to coincide with my dissertation
(also released another version of analyze).
Please try it out. (Clojure 1.5.0-beta1 only)
Typed Clojure 0.1
https://github.com/frenchy64/typed-clojure
[typed 0.1]
analyze 0.2
I've read about four tutorials on monads so far, but it still escapes me.
In fact, I'm still not sure what problem it solves. I'm familiar with the
problem of having, say, three functions like f(a) - b, g(c) - d, h(e) -
f, which you'd like to chain like f(g(h(x))), but you can't because b is a
Can someone recommend a library that contains a function comparing doubles
for equality?
This clojure cookbook has a section on comparing floating-point numbers.
http://www.gettingclojure.com/cookbook:numbers
This blog post makes me want to find an implementation by someone who has
more
On Fri, Oct 26, 2012 at 4:16 AM, Tassilo Horn t...@gnu.org wrote:
Any ideas and pointers how to implement that?
I don't really see anyway to do this without the graph itself being a
relational data structure. I haven't seen any data structure that fits that
bill beyond lists (which of course
I can't say I grok monads completely yet, but was one of the tutorials you read
this one?
http://blog.sigfpe.com/2006/08/you-could-have-invented-monads-and.html
I like the style of showing how they solve problems that arise naturally in the
context of purely functional programming, with
On Oct 26, 2012, at 11:06 AM, Brian Craft wrote:
I've read about four tutorials on monads so far, but it still escapes me.
In fact, I'm still not sure what problem it solves.
Monads are hard to understand, and I too found I wasn't the target audience for
the explanations I read. I finally
+1 for Persona. Please give your user a chance to break the cycle of
password madness ;-)
On Friday, October 26, 2012 1:10:42 PM UTC+2, Dave Sann wrote:
Sorry, I meant to say authentication.
On Friday, 26 October 2012 22:06:48 UTC+11, Dave Sann wrote:
For authorisation, I really like
Can't seem to get it to work. Have tried posting to a .Net Mvc 4 action,
and a Ruby/Rails action. Have had no success at all. It attempts and then
just throws an exception:
SYNTAX_ERR: DOM Exception 12
Error: An invalid or illegal string was specified.
Problem is, that doesn't really help
(.send goog.net.XhrIo action callback 'POST' serialized )))
You are using the clojure symbol 'POST' not the string POST. Switch
to double quotes and I bet it works.
jack.
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Enhancements:
- experimental support for Datomic
- eqfd now supports - /
Fixes:
- distinctfd goal behaved badly if argument wasn't ground
- LOGIC-62: distincto bug reveals much larger issues around how we look up
constraints. because vars can be bound in any order and we use vars to map
to
Hi,
At work I've had a few conversations about treating files, especially
large ones, as seqs of lines. In particular, the apparent conflict
between using clojure.core/with-open to ensure a file is closed
appropriately, and clojure.core/line-seq as a generic sequence of
lines which may be
Appreciate everyone's responses! I'll certainly check out the let- option.
jason
On Friday, October 26, 2012 6:16:28 AM UTC-7, Jonathan Fischer Friberg
wrote:
You could also let every function take a map as input/output.
Then, b could return a map with key :result-b or similar.
This result
I usually wind up with the line-seq from old contrib. Could you be more clear
about what isn't satisfying about that? For me it usually boils down to: it's
unsatisfying that core line-seq doesn't do that by default.
'(Devin Walters)
On Oct 26, 2012, at 6:45 PM, Dave Ray dave...@gmail.com
Another +1 for Persona. I'm the author of Refheap which uses Persona, and I
chose it specifically because of how easy it was to implement and use.
On Friday, October 26, 2012 3:26:16 PM UTC-5, Pierre R wrote:
+1 for Persona. Please give your user a chance to break the cycle of
password
Devin, did you mean read-line from the old clojure.contrib.io?
http://clojuredocs.org/clojure_contrib/clojure.contrib.io/read-lines
Click the + symbol next to Source to see source code, also available here:
Andy,
That's the custom seq that closes the file... I was referring to. I
guess I looking for a magical line-seq that closes the file correctly
even if you consume part of the sequence, is resilient to exceptions,
etc, etc. I realize that it might be impossible, so I asked. :)
Thanks,
Dave
On
On Fri, 2012-10-26 at 09:06 -0700, Brian Craft wrote:
First, do monads provide a generic solution, so I can apply
f(g(h(x)))?
Yes. control.algo.monads provides it as m-chain.
The closest equivalent to m-chain in Haskell is (foldl' (=) return),
but in most situations you would favor f = g = h
There was a mention of linear programming in this
threadhttps://groups.google.com/d/topic/clojure/oFCk5rOQUUo/discussionabout
core.logic.
I wonder: Is it possible to compose the techniques?
I've only just started digging into core.logic (ie today), but I've messed
with less-general constraint
On Fri, Oct 26, 2012 at 8:39 PM, Stephen Compall
stephen.comp...@gmail.com wrote:
On Fri, 2012-10-26 at 09:06 -0700, Brian Craft wrote:
First, do monads provide a generic solution, so I can apply
f(g(h(x)))?
Yes. control.algo.monads provides it as m-chain.
Can you expand on this? If the
When you're calling functions of js-libs in clojurescript, you will face a lot
of boilerplate transformations to native js-objects and/or arrays.
The calls that I make start to look like:
(js-lib-fn (jayq.util/clj-js param1) (jayq.util/clj-js param2)
(jayq.util/clj-js param3))
where the
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