Re: Trait-like behavior with Protocols

On 9 Feb 2010, at 22:29, aria42 wrote: If this situation is common enough, shouldn't defprotocol support optional implementations which are implicitly merged? Yes, if it is common enough. It's perhaps too early to decide. Konrad. -- You received this message because you are subscribed to the

Re: clojure gen-class questions

Hi, Am 09.02.2010 um 18:10 schrieb Аркадий Рост: > Oh...So to make methods I must declare them in gen-class clause and if > some function wasn't include in gen-class clause, it wouldn't be a > method even if it had a prefix from gen-class clause. > I mean: > (ns example.class > (:gen-class > :

Re: clojure gen-class questions

Hi, I wrote up a post: http://tr.im/NwCL Hope it helps. Sincerely Meikel -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patien

Re: Trait-like behavior with Protocols

If this situation is common enough, shouldn't defprotocol support optional implementations which are implicitly merged? On Feb 9, 6:01 am, Konrad Hinsen wrote: > On 09.02.2010, at 02:14, Stuart Sierra wrote: > > > On Feb 8, 6:13 pm, aria42 wrote: > >> (defprotocol Span > >>   (start [self]) > >>

Re: Prepping clojure for packaging (was: Re: Clojure for system administration)

> That's exactly what Debian does. For every Java package also provide > the maven xml file and the jar is discoverable from maven. The > installed packages on the local system acts as a local maven repo. > >   I see they also solved the problem of not do

Re: Detecting Number of Available CPU Threads

On Mon, Feb 8, 2010 at 8:37 PM, Wardrop wrote: > That seems like what I'm after, thanks. I assume this would be pretty > reliable across all platforms running the JVM. > > By the way, I did google the Java API with various keywords but never > cam across this object property. It may be worth noti

Re: clojure gen-class questions

Hi, I also am confused about gen-class, looking for a pointer to some code examples. Thanks, Brian ??? wrote: Oh...So to make methods I must declare them in gen-class clause and if some function wasn't include in gen-class clause, it wouldn't be a method even if it had a prefix fr

Re: clojure gen-class questions

And one more, when and why "methods" should be used? (except main) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with yo

Re: clojure gen-class questions

Oh...So to make methods I must declare them in gen-class clause and if some function wasn't include in gen-class clause, it wouldn't be a method even if it had a prefix from gen-class clause. I mean: (ns example.class (:gen-class :prefix pre- :methods [[method_name1 [... arg types here ...]

Re: clojure gen-class questions

Thaks for yor answer. It's really help me with studying. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first

Re: clojure gen-class questions

Hi, On Feb 9, 4:22 pm, Аркадий Рост wrote: > For example: > > (ns exaple_class >     (:gen-class)) > > (defn -main [args*] (...do smth...)) > (defn -method_name1 [args*] (...do smth...)) > (defn- -method_name2 [args*] (...do smth...)) > (def -a 5) > > (defn fun1 [args*] (...do smth...)) > (defn-

clojure gen-class questions

Hi! For example: (ns exaple_class (:gen-class)) (defn -main [args*] (...do smth...)) (defn -method_name1 [args*] (...do smth...)) (defn- -method_name2 [args*] (...do smth...)) (def -a 5) (defn fun1 [args*] (...do smth...)) (defn- fun2 [args*] (...do smth...)) (def b 5) As I understand, in t

Re: Trait-like behavior with Protocols

On 09.02.2010, at 02:14, Stuart Sierra wrote: > On Feb 8, 6:13 pm, aria42 wrote: >> (defprotocol Span >> (start [self]) >> (stop [self]) >> (span-length [self])) >> >> Now I know I can just make span-length a function on Span as opposed >> to part of the protocol. Is that what one should d

Re: error reporting for macro expansion

I agree, the error reporting from the compiler can often be hard to dig through. Besides showing both the location of the macro definition and its usage, it would be nice to hide all of the clojure.lang.* calls in the stack trace by default, or fold them into a single line. That way the user code

Re: scope of binding

D'oh! Thanks. I fall for that trap yet again. Sounds so simple when explained. 2010/2/9 Sean Devlin : > The problem is that map returns a lazy seq, and the lazy seq is > evaluated outside of the binding by the REPL.  If you add a doall > inside the binding, it behaves as you expect. > > user=> (b

Re: Prepping clojure for packaging (was: Re: Clojure for system administration)

On Tue, Feb 9, 2010 at 12:27 PM, Meikel Brandmeyer wrote: > Hi, > > maybe I don't understand the problem. Why can't the system provide > some kind of local repository? The package system (deb, rpm, ports, > whatever) just installs the dependencies there. A wrapper script reads > in the dependencie

Re: Please share your thoughts on dependency injection

On 8 Feb 2010, at 16:53, Boris Mizhen - 迷阵 wrote: > Hello all, > > I am playing with the idea of a little library for dependency injection. > The idea is to declare injectable values as metadata-to-function map. > I started with a sketch of what the client code may look like. > > Please let me k

Re: Trait-like behavior with Protocols

I think the extend function is made exactly to support the concrete implementation of protocols. It takes a type, and then any number of protocol + function map pairs, where keyword names map to functions. Checkout the protocol docs on assembla and look for extend: http://www.assembla.com/wiki/sh