One reason for being slightly "impure" here is for greater java
interoperability. Clojure gets much of its equality semantics for
collections from java.lang.List and java.lang.Set, which define equality to
depend only on collection contents and not on concrete type. By having
equality semantics whi
Man, this looks like pure gold!
Le mardi 9 avril 2013, Mark Engelberg a écrit :
> Instaparse is an easy-to-use, feature-rich parser generator for Clojure.
> The two stand-out features:
>
> 1. Converts standard EBNF notation for context-free grammars into an
> executable parser. Makes the task of
Instaparse is an easy-to-use, feature-rich parser generator for Clojure.
The two stand-out features:
1. Converts standard EBNF notation for context-free grammars into an
executable parser. Makes the task of building parsers as lightweight and
simple as working with regular expressions.
2. Works
Only identifiers (converting from SQL entities to Clojure keywords)
are handled "in" java.jdbc directly (inside result-set-seq) - entities
are handled in the DSL which generates SQL and therefore it's not
related to a connection. If you don't use the DSL, there's no
translation going on - you pass
JvJ writes:
> Even though the behaviour of lists and vectors differs under specific
> functions, they still count as equal, but this statement "If a = b, then (f
> a) = (f b)" seems like it would be some sort of rule or axiom about
> functional programming. What's the FP purists' view on this
Could the entities and identifiers functions (translating map-keys to
SQL-names and back) be specified along with connection parameters to avoid
repetition with each operation?
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I think the general pattern here is equality being a function of _part_ of
the value, but not all of it. For Clojure's = on lists/sequences/vectors,
it is based upon the sequence of values, but not whether it is a list,
sequence, or vector. For Perverse?'s equals it is quite explicit in its
defin
Yay!
On Tue, Apr 9, 2013 at 3:33 AM, Daniel Solano Gómez wrote:
> Hello, all,
>
> I am happy to report that Clojure has been accepted as a mentoring
> organization for Google Summer of Code 2013. Now is the time for
> sudents to start researching their projects and reaching out to members.
> At
You might be interested in
https://github.com/amalloy/clusp/blob/master/src/snusp/core.clj, my Clojure
interpreter for SNUSP (which is brainfuck with different control-flow
mechanics). It's purely functional, and IMO does a good job of separating
concerns; both of those are things it sounds lik
On Mon, Apr 8, 2013 at 4:02 PM, JvJ wrote:
>
> Even though the behaviour of lists and vectors differs under specific
> functions, they still count as equal, but this statement "If a = b, then (f
> a) = (f b)" seems like it would be some sort of rule or axiom about
> functional programming. What'
This is just an idle curiosity up for discussion, but in Clojure, if (= a
b) is true, then given some function f, it is not necessarily true that (=
(f a) (f b))
For instance:
(defn check-eq
[f a b]
[(= a b)
(= (f a) (f b))])
(check-eq #(conj % 1) '(1 2 3) [1 2 3])
[true false]
Even though th
If you're using 0.3.0-alpha1, I think I'd recommend using native SQL
and the execute! function:
(j/execute! my-db "UPDATE employee SET SALARY = SALARY + 1000 WHERE
department = ?" [dept])
Sean
On Mon, Apr 8, 2013 at 1:31 PM, Craig wrote:
>
> I am looking for example(s) of using clojure java.jdb
Last week I released a project with a monadic translator that needed to:
- work on sequences of expressions, arbitrarily nested
- generate Clojure code or stop and report the first error
- maintain a symbol table with easy access but not global state
The relevant code is here:
https://github.com/b
I am looking for example(s) of using clojure java.jdbc to perform delta
update eg SALARY = SALARY + 1000. Links appreciated. Thanks.
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Exciting times !
On Apr 8, 2013 9:35 PM, "David Nolen" wrote:
> WOOT!
>
>
> On Mon, Apr 8, 2013 at 9:33 PM, Daniel Solano Gómez
> wrote:
>
>> Hello, all,
>>
>> I am happy to report that Clojure has been accepted as a mentoring
>> organization for Google Summer of Code 2013. Now is the time for
WOOT!
On Mon, Apr 8, 2013 at 9:33 PM, Daniel Solano Gómez wrote:
> Hello, all,
>
> I am happy to report that Clojure has been accepted as a mentoring
> organization for Google Summer of Code 2013. Now is the time for
> sudents to start researching their projects and reaching out to members.
> A
Hello, all,
I am happy to report that Clojure has been accepted as a mentoring
organization for Google Summer of Code 2013. Now is the time for
sudents to start researching their projects and reaching out to members.
At the same time, we need to start putting together an application
template for
ClojureWerkz Money [1] is a Clojure library for working with monetary
amounts
and currencies, built on top of Joda Money.
Release notes for 1.1.0:
http://blog.clojurewerkz.org/blog/2013/04/08/money-1-dot-1-0-is-released/
1. https://github.com/clojurewerkz/money
--
MK
http://github.com/michaelkl
2013/4/8 Michael Holzer :
> Hi everybody!
>
> I saw the project suggestion on the ideas page [0] and would be very
> interested to work on it.
>
> First a few words about me and my background:
> I'm from Graz, Austria, currently finishing up my studies in
> mathematical computer sciences and inform
Hi everybody!
I saw the project suggestion on the ideas page [0] and would be very
interested to work on it.
First a few words about me and my background:
I'm from Graz, Austria, currently finishing up my studies in
mathematical computer sciences and informatics. I've been playing around
with Clo
I don't know if this is adequately "in the wild" (since it's part of a
monad lib itself), but part of my monads library uses a continuation monad
to let two mutually recursive functions traverse and rebuild a tree
structure without blowing the stack. It would be a pain to do this kind of
thing by h
oops, gen-plan was missing a helper function:
(defn- with-bind [id expr psym body]
`(fn [~psym]
(let [[~id ~psym] ( ~expr ~psym)]
(assert ~psym "Nil plan")
~body)))
On Mon, Apr 8, 2013 at 9:32 AM, Timothy Baldridge wrote:
> I have a love/hate relationship with monads. I th
I have a love/hate relationship with monads. I think their use in Clojure
programming is much more limited than most would like to admit.
However, I have found a very nice use for them: in my case, I'm attempting
to insert a very complex AST into Datomic. I'd like all my data to go into
Datomic as
Hi,
I've been reading about monads for the past couple of weeks and I think I
got the idea, but I still don't know when to use it since I don't have
enough experience with functional programming.
So, I'd like to ask you guys if you can point me to some examples of Monads
usage "in the wild". B
When I do "lein deploy clojars", the tool hangs after reporting that it has
created the jar.
Any idea what might be causing it to hang?
On Fri, Apr 5, 2013 at 7:19 PM, Nelson Morris wrote:
> Yep. There is an issue for making it work over scp, which the
> lein-clojars plugin uses, at
> https://g
Thank you very much, that worked splendidly.
On Friday, April 5, 2013 5:14:30 PM UTC+2, Alex Nixon wrote:
>
> Java substrings prevent the original string from being garbage collected;
> perhaps this also happens with regex matches?
>
> You can test the theory by surrounding the values in your ma
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