Re: Threading 'Append'

*To*: mathgroup at smc.vnet.net*Subject*: [mg62823] Re: [mg62796] Threading 'Append'*From*: "David Park" <djmp at earthlink.net>*Date*: Tue, 6 Dec 2005 00:03:35 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

What about... MapThread[Join[#1, {#2}] &, {{{1, 2}, {3, 4}, {5, 6}}, {a, b, c}}] {{1, 2, a}, {3, 4, b}, {5, 6, c}} David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: J Siehler [mailto:jsiehler at Gmail.com] To: mathgroup at smc.vnet.net If I run Thread[Append[{{1,2},{3,4},{5,6}},{a,b,c}]] I would expect to get {{1,2,a},{3,4,b},{5,6,c}} but in fact I get an 'Objects of unequal length' error. On the other hand, Thread[foo[{{1,2},{3,4},{5,6}},{a,b,c}]] %/.foo->Append gives what I wanted. Can someone explain what's going on?