Slam dunk Rich! Yes I can see that is much better.
Thanks for taking the time to understand what I was trying to do
instead of what I thought I was trying to do :)
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"Clo
On Oct 15, 11:13 pm, Timothy Pratley <[EMAIL PROTECTED]> wrote:
> Thanks so much for all the replies, that showed the way to what I
> wanted (simplified example using substring):
>
> (defn lazy-self [me]
> ((fn rfib [a] (lazy-cons a (rfib a))) me))
> (defmacro map-obj [jobj jmeth argbinds & co
Neat tip.
Applying that, this is what I've come up with:
(defn jcall [obj name & args]
(clojure.lang.Reflector/invokeInstanceMethod obj (str name)
(if args (to-array args) clojure.lang.RT/EMPTY_ARRAY)))
(defn map-obj [jobj jmeth coll & colls]
(apply map #(apply jcall jobj jmeth %&) coll c
Hi,
On 16 Okt., 05:13, Timothy Pratley <[EMAIL PROTECTED]> wrote:
> Just a few follow on questions...
> 1) Is there any way to do away with the input bindings altogether? map
> doesn't need input bindings, but memfn does. I don't quite grasp why
> they are needed for memfn, or how to construct an
Thanks so much for all the replies, that showed the way to what I
wanted (simplified example using substring):
(defn lazy-self [me]
((fn rfib [a] (lazy-cons a (rfib a))) me))
(defmacro map-obj [jobj jmeth argbinds & colls]
`(map (memfn ~jmeth [EMAIL PROTECTED]) (lazy-self ~jobj) [EMAIL PROTEC
Hi,
On 15 Okt., 19:09, "Graham Fawcett" <[EMAIL PROTECTED]> wrote:
> > (map f coll (range (count coll)))
>
> Rather than (range (count coll)), I would use (iterate inc 0), which
> incurs no overhead for counting the argument.
There is not only the overhead of counting, (count coll) might
also d
On Wed, Oct 15, 2008 at 1:09 PM, Graham Fawcett
<[EMAIL PROTECTED]> wrote:
>
> On Wed, Oct 15, 2008 at 8:21 AM, Jim Menard <[EMAIL PROTECTED]> wrote:
>>
>> On Wed, Oct 15, 2008 at 7:46 AM, Timothy Pratley
>> <[EMAIL PROTECTED]> wrote:
>>>
>>> Can I get some help with (map f coll)...
>>>
>>> What I
On Oct 15, 11:26 am, "Jim Menard" <[EMAIL PROTECTED]> wrote:
> On Wed, Oct 15, 2008 at 8:21 AM, I wrote:
> > map can take more than one argument. If it has N arguments, it calls f
> > with N arguments, each taken from the Nth value of each collection.
>
> Too many "N"s. Restated, map takes a fun
On Wed, Oct 15, 2008 at 8:21 AM, Jim Menard <[EMAIL PROTECTED]> wrote:
>
> On Wed, Oct 15, 2008 at 7:46 AM, Timothy Pratley
> <[EMAIL PROTECTED]> wrote:
>>
>> Can I get some help with (map f coll)...
>>
>> What I want to do is map a java function that takes 2 arguments over a
>> list
>> where the
On Wed, Oct 15, 2008 at 8:21 AM, I wrote:
> map can take more than one argument. If it has N arguments, it calls f
> with N arguments, each taken from the Nth value of each collection.
Too many "N"s. Restated, map takes a function f and N collections,
each of which should have the same number of
On Wed, Oct 15, 2008 at 7:46 AM, Timothy Pratley
<[EMAIL PROTECTED]> wrote:
>
> Can I get some help with (map f coll)...
>
> What I want to do is map a java function that takes 2 arguments over a
> list
> where the first argument is the index into the list itself
> and the second argument is taken
Can I get some help with (map f coll)...
What I want to do is map a java function that takes 2 arguments over a
list
where the first argument is the index into the list itself
and the second argument is taken from the list
The problem being map uses a function of 1 argument.
Does that mean I nee
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