Re: [Factor-talk] "group-by" word
You might also be interested in this blog post, which walks through how to
build a group-by word:
http://re-factor.blogspot.com/2011/04/group-by.html
On Sat, Nov 19, 2011 at 10:19 AM, Joe Groff wrote:
> You can look at math.statistics:collect-by as a reference:
>
> USE: math.statistics
>
> { "hello" "hola" "ball" "scala" "java" "factor" "python" } [ length
> ] collect-by
>
>
> --
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> contains a definitive record of customers, application performance,
> security threats, fraudulent activity, and more. Splunk takes this
> data and makes sense of it. IT sense. And common sense.
> http://p.sf.net/sfu/splunk-novd2d
> ___
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>
>
--
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contains a definitive record of customers, application performance,
security threats, fraudulent activity, and more. Splunk takes this
data and makes sense of it. IT sense. And common sense.
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Re: [Factor-talk] "group-by" word
You can look at math.statistics:collect-by as a reference:
USE: math.statistics
{ "hello" "hola" "ball" "scala" "java" "factor" "python" } [ length
] collect-by
--
All the data continuously generated in your IT infrastructure
contains a definitive record of customers, application performance,
security threats, fraudulent activity, and more. Splunk takes this
data and makes sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-novd2d___
Factor-talk mailing list
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Re: [Factor-talk] "group-by" word
Do it step by step - think about the steps you need to take.
I would first sort the array by length.
Then I would group them by length (look at the monotonic-split word for that).
That would be very close to what you want.
On Nov 19, 2011, at 12:49 PM, missingfaktor wrote:
> I want to write a word "group-by" that has following stack effect and
> behavior:
>
> Signature:
>
> : group-by ( seq quot -- alist ) (group-by-impl) ;
>
> Input:
>
> { "hello" "hola" "ball" "scala" "java" "factor" "python" } [ length ] group-by
>
> Output:
>
> H{
> { 5 { "hello" "scala" } }
> { 4 { "hola" "ball" "java" } }
> { 6 { "factor" "python" } }
> }
>
> I tried this many times, but failed. Can someone please provide me an
> implementation for this, preferably with an explanation?
> --
> Cheers,
> missingfaktor.
>
> When you stand for what you believe in, you can change the world.
>
> --
> All the data continuously generated in your IT infrastructure
> contains a definitive record of customers, application performance,
> security threats, fraudulent activity, and more. Splunk takes this
> data and makes sense of it. IT sense. And common sense.
> http://p.sf.net/sfu/splunk-novd2d___
> Factor-talk mailing list
> Factor-talk@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/factor-talk
--
All the data continuously generated in your IT infrastructure
contains a definitive record of customers, application performance,
security threats, fraudulent activity, and more. Splunk takes this
data and makes sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-novd2d___
Factor-talk mailing list
Factor-talk@lists.sourceforge.net
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[Factor-talk] "group-by" word
I want to write a word "group-by" that has following stack effect and
behavior:
Signature:
: group-by ( seq quot -- alist ) (group-by-impl) ;
Input:
{ "hello" "hola" "ball" "scala" "java" "factor" "python" } [ length ]
group-by
Output:
H{
{ 5 { "hello" "scala" } }
{ 4 { "hola" "ball" "java" } }
{ 6 { "factor" "python" } }
}
I tried this many times, but failed. Can someone please provide me an
implementation for this, preferably with an explanation?
--
Cheers,
missingfaktor .
When you stand for what you believe in, you can change the world.
--
All the data continuously generated in your IT infrastructure
contains a definitive record of customers, application performance,
security threats, fraudulent activity, and more. Splunk takes this
data and makes sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-novd2d___
Factor-talk mailing list
Factor-talk@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/factor-talk
