Re: Threading 'Append'

*To*: mathgroup at smc.vnet.net*Subject*: [mg62834] Re: [mg62796] Threading 'Append'*From*: Andrzej Kozlowski <akoz at mimuw.edu.pl>*Date*: Tue, 6 Dec 2005 00:04:59 -0500 (EST)*References*: <200512051840.NAA21108@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

On 6 Dec 2005, at 03:40, J Siehler wrote: > 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? > All you need to do is: In[9]:= Thread[Unevaluated[Append[{{1, 2}, {3, 4}, {5, 6}}, {a, b, c}]]] Out[9]= {{1, 2, a}, {3, 4, b}, {5, 6, c}} The name of the function "Unevaluated" should make it self evident what happened here (I hope). Andrzej Kozlowski

**Follow-Ups**:**Re: Re: Threading 'Append'***From:*Pratik Desai <pdesai1@umbc.edu>

**References**:**Threading 'Append'***From:*"J Siehler" <jsiehler@Gmail.com>