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MathGroup Archive 2000

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Re: odd behaviour in rule delayed

  • To: mathgroup at smc.vnet.net
  • Subject: [mg21515] Re: [mg21499] odd behaviour in rule delayed
  • From: "Henry Foley" <thomas_aq2 at email.msn.com>
  • Date: Fri, 14 Jan 2000 02:43:32 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Francisco:

I think the problems were twofold. I dropped "list" in favor of a since list
conflicts with List. Then I changed the iterator from "k++" to "kk++".

Cheers,
Hank Foley


In[18]:=
a = {1, 0, 1, 0, 0, 1}
kk = 0; newlist = a /. 1 :> ++kk


Out[18]=
{1, 0, 2, 0, 0, 3}
-----Original Message-----
From: Francisco Gutierrez <rpena at impsat.net.co>
To: mathgroup at smc.vnet.net
Subject: [mg21515] [mg21499] odd behaviour in rule delayed


>I have M 4.0, window 95.
>I have a list of 0's and 1's, and I want the one's to perform a consecutive
>numeration. For example, transform {1,0,1,0,0,1} into {1,0,2,0,0,3}.
>
>The easiest (and most elegant, I think) way to do it is with a counter and
>rule delayed:
>list={1,0,1,0,0,1}
>kk=0; newlist={1,0,1,0,0,1} /.1:>++k
>
>However, the answer I get from this operation is completely
>odd:{10.,0,10.,0,0,10.}:>++k.  I closed my session and re-started my
>computer, but I keep getting the same stuff.  I don't understand what is
>happening. By the way, this problem didn't appear in M3.0.
>
>Can somebody help me?
>
>Francisco Gutierrez
>
>





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