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Re: Assigning part of indexed object

  • To: mathgroup at smc.vnet.net
  • Subject: [mg119794] Re: Assigning part of indexed object
  • From: Valeri Astanoff <astanoff at gmail.com>
  • Date: Thu, 23 Jun 2011 07:23:23 -0400 (EDT)
  • References: <itsjn7$8u7$1@smc.vnet.net>

On Jun 22, 1:29 pm, "Fabrice P. Laussy" <fabrice.lau...@n0spam-
gmail.com> wrote:
> How do you set the part of an indexed object, say:
>
> m[1] = Range[5];
>
> is my indexed object (I could have m[2], etc.). Now I
> want to do something like:
>
> m[1][[1]] = 10;
>
> with effect of having m[1] read:
>
> {10, 2, 3, 4, 5}
>
> but of course the line above evaluates to 1 = 10.
>
> This could be achieved by having a non-indexed object get
> in the way, e.g., m1=m[1], assign m1 and then return to
> m[1]=m1, but I believe there should a more elegant way.

My may to do it :

m[1] = Range[5];
m[1] = ReplacePart[m[1], 1 -> 10]

{10, 2, 3, 4, 5}

--
Valeri


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