I spent some time recently documenting a large clojure project. The
approach I used was a combination of doc-strings, comments throughout
my code, and a project-wide emacs-org-mode file summarizing the point
of each file, the important functions in each file categorized by
purpose, and an overview
On Sun, Sep 5, 2010 at 3:32 PM, Michał Marczyk wrote:
> Calls going through Vars in clojure.core receive special treatment for
> speed, which is why you can't rebind them.
Actually this was backed out before 1.2 was released. Now only
definline functions and (in 1.3) static functions behave this
You can add essentially one more level of indirection to your dispatch
function logic and return an integer (or string or whatever) and match on
that. So, with your example, when you want "method1" called, return 1 from
the dispatch function, when you want "method2" return 2, you get the idea:
(d
>
> I think it would be great if an official "clojure-fmt" tool existed.
> I have no interest in forcing people to use it who don't want to. But
> I think it would set a great baseline for IDEs and would be helpful to
> the people and teams who like having coding standards. I would be one
> of a
On Sun, Sep 5, 2010 at 1:08 PM, Daniel Gagnon wrote:
> I'd be all for having clojure-fmt that would format clojure code in the way
> Rich prefers it so that when I get random code I could convert it to a nice
> and predictable format. It should be even simpler to write for a lisp than
> other lang
Ah! Thanks a lot, Michał -- that clarifies a lot for me.
Best regards,
Ingolf
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Hello everybody,
It is awesome that we can specify our own dispatch functions and
corresponding values.. However, I feel we should also have control over the
functions that is used to match the value of the dispatch function with that
of the one specified in the defmethod.
For instance if my dis
Thanks, Constantine! Your work on cupboard is awesome! I'll take a
look at the deadlock detection to see if I can help.
Any thoughts on how to marshal functions? What about vars and dynamic
binding?
Thanks!
Alyssa
On Sep 5, 11:02 am, Constantine Vetoshev wrote:
> On Aug 30, 5:02 pm, nchubrich
> > How about introducing a second part to the api? (store) creates a
> > wrapper for the persistent address, and refp then takes one of those
> > wrappers and the name?
>
> I like that. I would go one step further and say refp should have a
> default data store that is used unless you specify any
For me, I'm using compojure/ring mostly for building web services.
I use html whenever I need some simple html templates. But since it's
a web service, I use XML and JSON far more often.
So in the end, compojure/ring just serves as a way to invoke the functions
to get output. There isn't AJAX roun
I had too much time on my hands, and put together a Clojure-based
monad tutorial. If that kind of thing is your cup of tea, I'd love to
get some feedback on it. Here's the link
http://erl.nfshost.com/2010/09/05/bind-unit-and-all-that-2/
David
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On 6 September 2010 02:01, CuppoJava wrote:
> Ah that makes sense! Thanks Michal!
Great! :-)
> I have looked through Lisp in Small Pieces, and didn't find it very
> well written. I think a lot was lost through the translation.
Oh, that's unfortunate. Perhaps I should step up my French-learning
> I'd be all for having clojure-fmt that would format clojure code
> in the way Rich prefers it so that when I get random code I could
> convert it to a nice and predictable format. It should be even
> simpler to write for a lisp than other languages.
See Guy Steele "Common Lisp, The Language" pp
Ah that makes sense! Thanks Michal!
I have looked through Lisp in Small Pieces, and didn't find it very
well written. I think a lot was lost through the translation. Besides
SICP, the other great lisp book I read was actually "The Scheme
Programming Language". The chapter on continuations is mind-b
On 6 September 2010 01:11, ingokr wrote:
> Patrick & Meikel: thanks! Your solutions do produce almost what I
> need; the idea is with
>
> (tm a b)
>
> I should get back
>
> {:a a :b b}
>
> Your solutions produce sth equivalent to {:a (eval a) :b (eval b)} in
> this case.
Actually Meikel's solutio
Hi again --
First, let me thank all of you for you kind and instructive comments.
Kent: thanks for the explanation of the relationships between reader
and macro expansion.
Patrick & Meikel: thanks! Your solutions do produce almost what I
need; the idea is with
(tm a b)
I should get back
{:a a
On Sun, Sep 5, 2010 at 5:18 PM, Kent wrote:
> When clojure evaluates a piece of code it goes through several steps.
> First the reader takes the string representation of your code and
> turns it into the clojure data structures represented by your code.
> Those data structures are then sent to the
In the presence of macros, it's best to think "Lisp compilation =
evaluation of all forms". So, you do two things at the same time: (1)
accumulate object code to be output as the result of the compilation
and (2) actually execute the programme, so that you can call functions
and examine variables w
Thanks for all the replies! SICP is one of my favorite books actually,
I have read through it many times already.
My question is particularly concerning expanding macros during
compilation.
If your source has NO use of macros. Then it's trivial to compile.
Just compile each form one by one.
The
On 5 September 2010 18:46, CuppoJava wrote:
> I'm writing a simple lisp for educational purposes, and I can't figure
> out how to do compilation.
The final chapter of SICP [1] deals with compilation of Scheme code
down to a kind of assembly language (also introduced in the book).
It's fantastical
On Sun, Sep 5, 2010 at 5:11 PM, Stuart Sierra
wrote:
> Clojure compiles sources to Java ".class" files. To create a .class
> file that can be run at the command line, you need a namespace with a
> (:gen-class) directive and a function named "-main". Here's an
> example:
>
I think the question wa
On 5 September 2010 07:48, Yang Dong wrote:
> That sounds reasonable. But how would you explain `pmap'? This
> function is not inlined. In fact, every function in clojure.core can't
> be bound without a declare (as far as I have tried). And it seems this
> problem only exists when I tried to bind
When clojure evaluates a piece of code it goes through several steps.
First the reader takes the string representation of your code and
turns it into the clojure data structures represented by your code.
Those data structures are then sent to the compiler for compilation,
including possible macro e
Hi,
Am 05.09.2010 um 23:10 schrieb CuppoJava:
> (defmacro tm [& args]
> `(hash-map ~@(mapcat (fn [x] (list (keyword x) x)) args)))
Or you return the map directely:
(defmacro tm
[& args]
(apply hash-map (mapcat (juxt keyword identity) args)))
Sincerely
Meikel
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Clojure compiles sources to Java ".class" files. To create a .class
file that can be run at the command line, you need a namespace with a
(:gen-class) directive and a function named "-main". Here's an
example:
(ns com.example.myapp
(:gen-class))
(defn -main []
(println "Hello
I'm not sure if this is intended behavior or not, since unquote-
splicing was originally meant for splicing into lists.
But for now anyway, you can use this as a workaround?
(defmacro tm [& args]
`(hash-map ~@(mapcat (fn [x] (list (keyword x) x)) args)))
Hope that helps
-Patrick
On Sep 5, 3:
This seems like a bug to me.
user> `[~@(mapcat #(list (keyword %) (str %)) '(a b c))]
[:a "a" :b "b" :c "c"]
user> `(~@(mapcat #(list (keyword %) (str %)) '(a b c)))
(:a "a" :b "b" :c "c")
user> `#{~@(mapcat #(list (keyword %) (str %)) '(a b c))}
#{"a" "b" "c" :a :c :b}
user> `{~@(mapcat #(list (k
>
>a) Python doesn't really have this problem
>
Python doesn't have this problem because the canonical style is define by
PEP 8 and Pythonistas love simplicity through conventions.
PEP 8: http://www.python.org/dev/peps/pep-0008/
I think it's actually a great feature of the language, I almost
It is public idea in Ruby community that Sinatra is best used for
rapid prototyping and creating API for web application.
Maybe because it isn't MVC framework, I don't know.
Any way I though since Compojure is similar to Sinatra it will be used
for the same purposes.
On Sep 5, 5:21 pm, James Reeve
In an effort to paint the shed until it crumbles I will stoke the engine of
discourse with starter fluid.
I see a couple issues that probably *should* be resolved within the community
and once resolved can be pointed to as Canon of
Clojure Conventional Conformity ().
bla bla wadler's law ..
OK... This question is probably better directed at clojure-dev, but my
membership is still pending. I'm having trouble interpreting
LockingTransaction.run. Where exactly are read-locks for ensures set?
And what precisely is in the commutes map and sets set? Why does
membership in sets short-circuit
That sounds reasonable. But how would you explain `pmap'? This
function is not inlined. In fact, every function in clojure.core can't
be bound without a declare (as far as I have tried). And it seems this
problem only exists when I tried to bind the core functions. It's ok
for me to substitute the
I've been programming in large OO applications since about 1993.
One problem is that a lot of useful code gets buried way deep in an OO
class hierarchy, where you are forced to create lots of intermediate
objects just to get to the useful functions.
This really hurts the re-usability, unit testab
Hello --
I am trying to gain a better understanding of Clojure's macro
language.
The output I am aiming for (and which is to be used as code in another
macro) is as follows:
{:a a :b b :c c :d d}
The attempt I made is as follows:
(defmacro tm [& args]
`{~@(mapcat (fn [x] (list (keyword x) x)
Hi everyone,
I'm writing a simple lisp for educational purposes, and I can't figure
out how to do compilation. In particular, I can't figure out how I can
get a compiled file to run in the same way as if it were loaded. I
read on the webpage that Clojure can do this. Does anyone know how
Clojure do
On Aug 30, 5:02 pm, nchubrich wrote:
> Persistence libraries always end up warping the entire codebase; I've
> never succeeded in keeping them at bay. Using data with Incanter is
> different from ClojureQL, which is different from just using
> contrib.sql, and all of it is different from dealing
On Fri, Sep 3, 2010 at 10:01 AM, Alan wrote:
> A very handy web page to have around; thanks for mentioning it. It
> looks nice too, but the accessibility is a bit poor - when I look at
> it with an increased text size, the CSS quickly falls apart and
> renders it confusing and/or unreadable. So if
On 4 September 2010 16:44, HB wrote:
> If Compojure is micro web framework like Sinatra, does this means it
> is not suitable for large web applications?
The "micro" refers to how much the framework does for you, rather than
the size of the application.
The advantage of a framework like Ruby on
On Sun, Sep 5, 2010 at 4:56 PM, Martin DeMello wrote:
> On Sat, Sep 4, 2010 at 11:23 PM, Abhishek Reddy wrote:
> > More generally, the fragmented state of support -- too many separate and
> > underused mailing lists, IRC channels, websites, each for small,
> composable
> > components.
>
> This is
I assume you have to vectors, v1 and v2, and you want to add all the
elements from v1 that doesn't equal any element from v2 to v2. In that
case you're probably best of using filter to extract the elements from
v1 that are not equal to any element in v2. concat the result with v2.
Thomas
On Sep 2
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