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Re: Generate random numbers with shuf

From: Assaf Gordon
Subject: Re: Generate random numbers with shuf
Date: Fri, 05 Jul 2013 12:04:41 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130630 Icedove/17.0.7


On 07/04/2013 05:40 PM, Pádraig Brady wrote:
On 07/04/2013 09:41 PM, Assaf Gordon wrote:

Regarding old discussion here:

Attached is a patch with adds "--repetition" option to shuf, enabling random 
number generation with repetitions.

I like this.
--repetition seems to be a very good interface too,
since it aligns with standard math nomenclature in regard to permutations.

I'd prefer to generalize it though, to supporting stdin as well as -i.

Attached is an updated patch, supporting "--repetitions" with STDIN/FILE/-e 
(using the naive implementation ATM).
  $ shuf --repetitions --head-count=100 --echo Head Tail
  $ shuf -r -n100 -e Head Tail

But the code is getting a bit messy, I guess from evolving features over time.
I'd like to re-organize it a bit, re-factor some functions and make the code 
clearer - what do you think?
it will make the code slightly more verbose (and slightly bigger), but 
shouldn't change the running performance.


Attachment: shuf_random_numbers_2013_07_05.patch
Description: Text Data

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