Re: Two questions related to Arrays
- To: mathgroup at smc.vnet.net
- Subject: [mg113323] Re: Two questions related to Arrays
- From: "Nasser M. Abbasi" <nma at 12000.org>
- Date: Sat, 23 Oct 2010 07:07:46 -0400 (EDT)
- References: <i9r7vo$hot$1@smc.vnet.net>
- Reply-to: nma at 12000.org
On 10/21/2010 10:38 PM, Sam Takoy wrote:
> Hi,
>
> First, why doesn't the following return the first two elements of the
> outer list:
>
>
> Cases[{{{1}, {2}}, {3, 4}, {{5}, 6}}, _Array]
>
I am not sure what is _Array supposed to do?
I do not see Array being as a defined head in Mathematica. If you are
trying to find items with head Array in the expression, you will not
find any.
>
>
> Second, I'm looking for help writing a function
>
> f[t__]:=
>
> that returns Outer[Times, u] where u only includes the input variables
> that are Arrays.
>
>
> Many thanks in advance,
>
> Sam
>
do not understand. May be someone else can help you on this one.
--Nasser