From: Todd Benson <caduceass@...>
Date: 2008-03-08T04:01:11+09:00
Subject: Re: Class and inheritance

On Thu, Mar 6, 2008 at 7:20 PM, August0866 <august0866@hotmail.com> wrote:
> On Mar 5, 4:36 am, Todd Benson <caduce...@gmail.com> wrote:
>
> > On Wed, Mar 5, 2008 at 3:08 AM, Todd Benson <caduce...@gmail.com> wrote:
>  > >  Least common denominator?
>  >
>  > I should point out, too, that my use of #min only works if you want to
>  > pick the first on the list that fits.  Maybe what you really want are
>  > _all_ the jobs that apply for a person.
>  >
>  > Todd
>
>  Wow Crunchy code.  it will take ma awhile to decipher all the things
>  going on up there.
>
>  originally the idea was first match out.  I think that approach may
>  not be where i end up in the end.
>
>  thanks again for the help

With comments...

require 'matrix'
#need this for Matrix class
joblist = ['adventurer', 'courier']
attributes = ['power', 'smarts', 'speed']
n, j = attributes.length, joblist.length
a = [[14, 14, 14], [14, 10, 14]]
#cheating here, need Hash really
some_poor_guys_stats_copies = Array.new(j, Array.new(n) {rand(20) + 1})
#an array of arrays to be a matrix
s = Matrix[*some_poor_guys_stats_copies]
#make the requirements Matrix
#using e for "employment", bad choice
e = Matrix[*a]
poss = []
#using poss for possibilities, bad choice
(s - e).to_a.each_with_index do |v, i|
 poss << i if (v.select {|j| j >= 0}).length == n
end
p joblist[poss.min] rescue p "Commoner"


Okay, the key here is:

I have two matrices of same dimensions.  I take the guys stats,
subtract the requirements, and remove anything that is negative in
each ability check.

I'm not certain at the moment how I would clean that up for production
use, but I have a few ideas.  The only dodgy part of the code
(discounting the variable names), IMHO, is the a = [[14, 14, 14], [14,
10, 14]] part.  Not because of the logic, but because of the fact
we're depending on the order of the array called "a".  Like, what if
somebody changes the attributes array?  A Hash object would fit better
here even if it requires more code.

hth,
Todd