Re: Weird Position[list,form] behavior when used inside of Module.
- To: mathgroup at smc.vnet.net
- Subject: [mg117072] Re: Weird Position[list,form] behavior when used inside of Module.
- From: James Stein <mathgroup at stein.org>
- Date: Wed, 9 Mar 2011 06:58:13 -0500 (EST)
Well, this returns {{3} as expected:
Module[{A, B, RETURN},
A = {5.3, 5.4, 5.2, 5.9};(*The function F returns {5.3,5.4,5.2,5.9}*)
B = Position[A, Min[A]];
RETURN = B]
so I assume that 'F' does not really return what your comment says it does.
For example, where 'F' is undefined:
Module[{A, B, RETURN}, A = F[];
B = Position[A, Min[A]];
RETURN = B]
returns {{}}, which I think is correct if A=F[] ('F' undefined).
-- James
On Tue, Mar 8, 2011 at 2:36 AM, Dwayne <dwaynedcole at gmail.com> wrote:
>
> This works:
>
> Position[A, Min[A]]]
>
> where, A = {5.3, 5.4, 5.2, 5.9}. the Position function returns ( 3 ).
>
> But this doesn't
>
> Module[{ A, B, RETURN},
> A = Table[ F, {i,{.1, .2, .3, .4}]; (* The function F
> returns {5.3, 5.4, 5.2, 5.9} *)
> B = Position[A, Min[A]];
> RETURN = B]
>
> The above module returns, { }.
>
> Is this a bug?
>
>
>
>