I am taking up a discussion from 2010:
https://groups.google.com/group/clojure/browse_frm/thread/60dff89149c3d2e6/
I would prefer if it would be possible to define "closed maps", e.g.
maps that allow only a certain set of keywords, both for get and
"set" (like in assoc, assoc-in, update-in, ...).
Thank you very much Mr Hugo.
I'm now able to continue with my learning.
Hope to be helping people here soon :-)
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On Thu, 21 Apr 2011 20:24:15 -0400, uMany wrote:
when I try lein deps at a test-project
with this
I got this long error message:
tmp/test-project$ lein deps
Downloading:
org/clojure/clojure/1.2.0-master-SNAPSHOT/clojure-1.2.0-master-SNAPSHOT.jar
from clojure-snapshots
Downloading:
org/clojure/c
Hi,
I'm learning to program Common Lisp and Clojure all at once. I just like
them a lot. I like them so much that I am also using Emacs, which is like a
pain in the a.. for a total newbie.
Any way, I installed
sun-java6-jdk
ant
maven (3.0.2)
clojure-contrib
jline
emacs
slime
clojure-mode
leining
the current compiler doesn't namespace qualify special forms (forms
which are built into the compiler) but somethings that the
documentation lists as "special forms" are infact macros defined in
clojure.core based on the real special forms provided by the compiler.
macros are namespace qualified so
By popular demand (well at least two requests), pallet.thread-expr is now
an independent lib, extracted from pallet.
The library provides a number of macros for use within a -> expression.
A couple of examples:
(-> 2
(arg-> [x]
(* (inc x
=> 6
(-> 1
(for-> [x [1 2 3]]
(+ x)))
Hi.
(In case it makes a difference, I'm using Clojure 1.2.)
If one creates a new namespace using in-ns, the new namespace
does not refer to clojure.core, as explained at
http://clojure.org/namespaces.
I noticed one can use certain special forms in a namespace
created using in-ns, but not others:
OK, thanks, will do.
Simon
On Thu, Apr 21, 2011 at 20:01, Stuart Halloway wrote:
> Let's say that little surprises are not a design objective. :-)
>
> Please do follow up with additional questions as you have them.
>
> Stu
>
> Hi Stu.
>
> Thanks. That makes sense.
>
> Is this special-casing doc
+1
Thanks so much. Looking forward to digging into the code this evening.
Any chance you will have any online course materials for public consumption?
Thanks again,
Sent via mobile
On Apr 21, 2011, at 1:25 PM, Ambrose Bonnaire-Sergeant
wrote:
> This is great, thanks for sharing!
>
> Ambros
Let's say that little surprises are not a design objective. :-)
Please do follow up with additional questions as you have them.
Stu
> Hi Stu.
>
> Thanks. That makes sense.
>
> Is this special-casing documented somewhere, or is it something one can only
> discover by playing? More generally,
Hi Stu.
Thanks. That makes sense.
Is this special-casing documented somewhere, or is it something one can only
discover by playing? More generally, I'm wondering whether I'm likely to
come across other areas with little surprises as I learn more. An example:
I've been exploring special symbols
This is great, thanks for sharing!
Ambrose
On Thu, Apr 21, 2011 at 10:57 PM, Tom Van Cutsem wrote:
> The following might be of interest to Clojurians:
>
> https://github.com/tvcutsem/stm-in-clojure is a meta-circular
> implementation of STM in Clojure. It was created purely for educational
> pu
Hi Simon,
in-ns and ns are special cased for convenience. Usually in-ns is used to enter
a namespace that has already been loaded, so that core names are available. For
example:
;; in a file
(ns my.ns)
;; stuff
(comment
(require 'my.ns)
(in-ns 'my.ns)
;; tests
)
Stu
> Hi.
>
> I'm l
Hi.
I'm learning Clojure, currently using Clojure 1.2.
http://clojure.org/namespaces when talking about creating
namespaces says:
At the Repl it's best to use in-ns, in which case the new
namespace will contain mappings only for the classnames
in java.lang. In order to access the names from
Hi Manoj,
> "unreadable message: (:emacs-rex (swank:autodoc (quote ("d" swank::
> %cursor-marker%)) :print-right-margin 132) "user" :repl-thread 4)
> exception in read loop
> java.lang.RuntimeException: java.lang.Exception: Invalid token:
> swank::"
I have experienced a similar (or the same) prob
The following might be of interest to Clojurians:
https://github.com/tvcutsem/stm-in-clojure is a meta-circular implementation
of STM in Clojure. It was created purely for educational purposes (to allow
people to better understand STM by reading a Clojure implementation, without
having to descend
Hi Paul,
Thanks, good to know. Sorry for the misleading email.
Cheers,
Ivan.
On 21 April 2011 08:47, pmbauer wrote:
> Ivan,
> clojure/core use a different workflow than is typical for github
> projects.
> The github readme doesn't indicate, but you may find the process here:
>
> http://clojur
I am facing problem in using Emacs with Clojure. I am able to use it
with Lisp without any problems.
The problem is - I start the server using "lein swank" (from my
project dir) and then I start Emacs using "M-x slime-connect" but then
as soon as I start typing something in Emacs I get the error -
Your function objects-at is correct but you have mixed up keywords and
strings in the definitions. Try the following:
(def *objects* '(:bottle :bucket :frog :chain))
(def *object-locations* {:bottle 'living-room, :bucket 'living-room,
:chain 'garden, :frog 'garden})
(defn objects-at [loc objs ob
A type hint makes no difference because the param "state" is treated
as an Object instance.
user=> (:x @*aa*)
3
user=> (.invoke :x @*aa*) ; [16] invoke : Object (Object)
3
Besides, I don't think it's a good idea trying to setup some sort of
static type-checker and strongly-typed functions. You're
Ivan,
clojure/core use a different workflow than is typical for github
projects.
The github readme doesn't indicate, but you may find the process here:
http://clojure.org/contributing
http://clojure.org/patches
Cheers,
pm
On Apr 20, 1:44 am, Ivan Koblik wrote:
> Hello Konrad,
>
> Git workflow i
clojure/core use an alternative workflow to typical OSS on github, so
the eqqon link is not apropos.
The clojure github readme doesn't advertise the workflow, but you can
find it here:
http://clojure.org/contributing
http://clojure.org/patches
On Apr 20, 1:44 am, Ivan Koblik wrote:
> Hello Konra
>What are meta data used for?
Its a open system it can be used for anything. If you have data about
your data that does not effect equality.
Examples:
The docstrings you can write in clojure are metadata.
(defn my-func
"my-func does XY"
[] "whatever")
This will be expanded to metadata l
I am just trying to understand the meta data support.
What are meta data used for ?
Are they similar to the reflective API in Java ?
Are they related to any FP theory ?
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On 20 Apr 2011, at 13:58, Stuart Halloway wrote:
There are several new top-level projects at https://github.com/
clojure to cover the various contrib libraries people have asked for.
Thanks!
I just pushed tools.macro to github. I'll wait a while to see if this
causes any catastrophes. If no
2011/4/21 Tzach :
> I made a stupid mistake, and I want to share. This is not the actual code, I
> simplify it to demonstrate the point.
>
> I use a atom to a global hash as follow:
>
> (def *aa* (atom {:x 3 :y 4 :z 17}))
>
> Somewhere on the code, I have a function which look at the state and do
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