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