Variable number of arguments

*To*: mathgroup at smc.vnet.net*Subject*: [mg113307] Variable number of arguments*From*: Sam Takoy <sam.takoy at yahoo.com>*Date*: Sat, 23 Oct 2010 07:04:44 -0400 (EDT)

Hi, I'm looking for help writing functions with variable number of arguments. For example, how do I accomplish the (rather artificial) task of writing the function FunnySum that: - When called with multiple arguments, sums them - When called with a list, sums the elements of the list I was hoping that the FunnySum1 below would work, but it doesn't multiple arguments. FunnySum2 works, but is that the best solution? FunnySum1[k__] := Apply[Plus, If[ListQ[k], Sequence[k], k]] FunnySum1[{1, 2, 3, 4, 5, 6}] FunnySum2[k__] := Plus[k] FunnySum2[k_List] := Apply[Plus, Sequence[k]] FunnySum2[1, 2, 3, 4, 5, 6] FunnySum2[{1, 2, 3, 4, 5, 6}] Many thanks in advance, Sam