Re: From list to list of arguments

*To*: mathgroup at smc.vnet.net*Subject*: [mg113314] Re: From list to list of arguments*From*: Norbert Marxer <marxer at mec.li>*Date*: Sat, 23 Oct 2010 07:06:02 -0400 (EDT)*References*: <i9r803$hp1$1@smc.vnet.net>

On Oct 22, 7:38 am, Sam Takoy <sam.ta... at yahoo.com> wrote: > Hi, > > Suppose I have a list of arrays, say g = {a, b, c} where a, b, and c are > arrays, and I would like to calculate > > Outer[Times, a, b, c] > > how do I do it? > > I tried > > Apply[Outer[Times,#]&, g], as in Apply[Outer[Times, #] &, {{1}, {1}}], > but that does not yield the right answer. So the question is: how does > one convert a list {a, b, c} into arguments to a function of variable > number of arguments? Thanks! > > An auxiliary question: within the function f[x__] := ... what kind of > object is x? It's not a list, but what is it? > > Many thanks in advance, > > Sam Hello Did you try Outer[Times, Sequence @@ g] Also: you can see that FullForm[f[x__]] gives f[Pattern[x,BlankSequence[]]] Best Regards Norbert Marxer