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From: weg@convx1.ccit.arizona.edu (Eythan Weg)
Newsgroups: comp.lang.apl
Subject: Re: Do I really need a loop?
Message-ID: <WEG.91May15133638@convx1.convx1.ccit.arizona.edu>
Date: 15 May 91 20:36:38 GMT
References: <3970004@hpwrce.HP.COM> <15160018@hpdmd48.boi.hp.com>
	<1991May15.120900.15736@watmath.waterloo.edu>
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In-reply-to: ljdickey@watmath.waterloo.edu's message of 15 May 91 12:09:00 GMT

In article <1991May15.120900.15736@watmath.waterloo.edu> ljdickey@watmath.waterloo.edu (L.J.Dickey) writes:

   In article <15160018@hpdmd48.boi.hp.com> rrr@hpdmd48.boi.hp.com (Rudi Rynders) writes:
   ...
   >I would convert the vector V = 7 8 to a matrix the same size as M and
   >fill it with a row of sevens and eigths as in VM assign 2 3 rho 7 7 7 8 8 8
   >and then multiply M by VM to get the desired answer.

   And, If you choose to use J, you could write

		  M * |: (|. $ M) $ V

In J I would write M*"1 0 V.
Eythan