ex
>
> On Thursday, May 19, 2022 at 4:12:33 PM UTC-5 Dmitry Kakurin wrote:
>
>> Hello,
>> The “Maybe Not” talk from 2018 has hinted at significant upcoming changes
>> for spec, such as removal of “:req” keys for map specs and potential
>> introduction of “s
Hello,
The “Maybe Not” talk from 2018 has hinted at significant upcoming changes
for spec, such as removal of “:req” keys for map specs and potential
introduction of “spec/select”.
But I could not find any additional information in the past 3-4 years on
the evolution of that line of
Interesting, I did not know that.
That's OK if checks do not *guarantee* correctness.
But having 20/80 Pareto principle in mind: if few simple detection technics
will warn about 80% of ambiguous grammars (especially the ones found in
practice), that would be very helpful.
Thanks, Dmitry.
--
assert during initialization phase.
Is there a way to do it now (or planned in the future)?
Thanks for being patient with me :-), Dmitry.
On Friday, April 12, 2013 12:51:36 AM UTC-7, puzzler wrote:
On Thu, Apr 11, 2013 at 7:41 PM, Dmitry Kakurin
dmitry@gmail.comjavascript:
wrote
Hi Mark,
Brilliant work, thank you!
I was playing with your arithmetic parser from tutorial, and noticed the
following definition for add and sub:
expr = add-sub
add-sub = mul-div | add | sub
add = add-sub '+' mul-div
sub = add-sub '-' mul-div
...
And I realize now that the
Very well, something along these lines would be my guess too.
But that would mean that in case 2 protocols are no faster
than multimethods.
And I've got an impression that protocols are described to be as fast as
interface dispatch (callvirt).
So either my impression is wrong (which is totally
Is there a document describing internal implementation of Clojure
protocols?
I.e. what is happening under the hood?
To be specific suppose I have extended ICountable protocol with a
single count method to String class. What happens when I call (count
some string)?
At what point dynamic dispatch
://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/R...
[2]https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/C...
On Sat, May 7, 2011 at 10:00 PM, Dmitry Kakurin
dmitry.kaku...@gmail.comwrote:
Is there a document describing internal implementation of Clojure
It's a great idea, and the site looks very good.
Two suggestions:
1. Move examples section above source code section
2. Add OpenID sign in support. Personally I'm instantly repelled by
sites asking me to create another account/password. And I'm sure I'm
not alone. Stackoverflow.com is a great
The last successful build was on June 23rd.
- Dmitry
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Suppose I already have a function f that accepts 0 and 1 param:
(defn f
([] 0)
([ _ ] 1))
How do I extend it with additional version that takes 2 params?
Something like the following that does not override the original:
(defn f [ _ _ ] 2)
and makes all 3 work:
(f)
(f 1)
(f 1 2)
- Dmitry
--
Please keep in mind that it is almost literally the speech that I give
to my friends/colleagues when they ask me why am I so excited about
Clojure. I did it many times now and I have quickly learned that
saying persistent data structures gets misinterpreted by every
single person as something you
On Dec 17, 10:42 am, Santhosh G R kusim...@gmail.com wrote:
Again the same statement about being humble :-(
The humble comment relates to the title of your article.
Lookup (and contrast) words analysis and opinion in your favorite
dictionary.
Were your post named My opinion about Clojure I would
Judging by the article you've spent very little time learning
Clojure and have managed to get every key point wrong:
Clojure is a multi-paradigm language
no it's not, and it's most certainty not an OOP language:
http://clojure.org/rationale
Functional programming finds its best implementation
Thanks for a great idea Andrew!
I was slightly annoyed by the lack of consistency in parameter
ordering of Clojure collections API (cons vs conj, get/assoc vs filter/
map/take).
IMHO the input collection should ALWAYS be the last param. Then simple
- macro would be sufficient in most cases.
Out of
On Oct 21, 9:14 pm, John Harrop jharrop...@gmail.com wrote:
You probably therefore want this instead:
(defn multi-filter [filters coll]
(let [c (count filters)
ignore (Object.)]
(map
(fn [i]
(remove #(= % ignore)
(take-nth c
(drop i
On Oct 21, 6:45 pm, John Harrop jharrop...@gmail.com wrote:
the reduction is wrapping the initial seq of empty vectors in ten
thousand layers of map ... fn ... invoke ... map ... etc.
Reducing a lazy sequence generator like map over a large sequence does not
work well in Clojure.
I wonder
, Alex Osborne a...@meshy.org wrote:
Dmitry Kakurin wrote:
I actually like your tag them then group them approach.
But what if the same record can have multiple tags?
E.g. :sales and :upgrades?
Hmmm. the first way that occurred to me is just make your tagging
function return a set:
(defn
)
(first s2
res)))
- Dmitry
On Oct 19, 12:13 pm, Meikel Brandmeyer m...@kotka.de wrote:
Hi,
Am 19.10.2009 um 01:34 schrieb Dmitry Kakurin:
This is in line with what I was thinking for my own custom filter
function.
Now how would you modify it if the same record can be both sales
On Oct 20, 5:52 am, Meikel Brandmeyer m...@kotka.de wrote:
(defn multi-filter [filters coll]
(reduce
(fn [res e]
(map (fn [f r] (if (f e) (conj r e) r))
filters
res))
(repeat (count filters) [])
coll))
I think this basically equivalent to the
The reduce-by approach (while cool) would not work for me because I
need to run multiple queries on the results.
- Dmitry
On Oct 18, 10:54 am, Alex Osborne a...@meshy.org wrote:
Alex Osborne wrote:
If the three output lists themselves are too large, I'd just explicitly
sum your units with
wrote:
Hi,
Am 18.10.2009 um 09:48 schrieb Dmitry Kakurin:
Here is what I have right now:
(let [idata ... something ...
sales
(filter
#($ (% Product Type Identifier) = 1
% Vendor Identifier = 01010012
)
idata
I need to run 3 separate filters on the same collection.
Can I do this in a single pass thru collection (as opposed to 3
separate passes)?
Basically I don't want to bind the head of 'idata' collection because
it holds the whole thing in memory. Also collection itself is coming
from a file.
Here
)
-David
On Oct 13, 2:22 am, Dmitry Kakurin dmitry.kaku...@gmail.com wrote:
What's wrong with my definition of sqrt?
user= (defn sqrt [x] (. System.Math Sqrt x))
#'user/sqrt
user= (sqrt 4)
System.InvalidCastException: Specified cast is not valid.
at lambda_method(Closure , Object
On Oct 10, 2:29 am, Dmitry Kakurin dmitry.kaku...@gmail.com wrote:
I've read Programming Clojure book an I love the language (and the
book), kudos!
I'm evaluating ClojureCLR as a scripting language for my product.
Is there a list of ClojureCLR limitations and not implemented
I've read Programming Clojure book an I love the language (and the
book), kudos!
I'm evaluating ClojureCLR as a scripting language for my product.
Is there a list of ClojureCLR limitations and not implemented
features?
I've just started playing with it and (after some debugging)
discovered that
I've watched some Clojure screen cast where Rich Hickey mentions that
initially Clojure was co-developed for both platforms simultaneously.
But then it became too hard and he has dropped .NET support.
Out of curiosity, why JVM has won the contest :-)?
- Dmitry
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