Re: Mapping Functions That Take More Than One Argument

*To*: mathgroup at smc.vnet.net*Subject*: [mg69916] Re: [mg69864] Mapping Functions That Take More Than One Argument*From*: János <janos.lobb at yale.edu>*Date*: Wed, 27 Sep 2006 06:05:15 -0400 (EDT)*References*: <200609260459.AAA01823@smc.vnet.net>

On Sep 26, 2006, at 12:59 AM, Gregory Lypny wrote: > Hello everyone, > > How can I map a functions onto sub-lists when the function takes more > than one argument. I can't seem to stumble upon the right syntax. > > Here's a list of three sub-lists. > > {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}} > > I want to drop the first element of each sub-list, that is, 1 from > the first, 4 from the second, and 7 from the third. > > Drop[{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}, 1] > > gives me > > {{4, 5, 6}, {7, 8, 9}}, > > which is what I expected (I'm learning) but not what I want. So, how > do I apply Drop to each sub-list? > > Regards, > > Gregory Here is two newbie approaches: In[2]:= Rest /@ lst Out[2]= {{2, 3}, {5, 6}, {8, 9}} In[3]:= (Take[#1, {2, Length[ #1]}] & ) /@ lst Out[3]= {{2, 3}, {5, 6}, {8, 9}} János

**References**:**Mapping Functions That Take More Than One Argument***From:*Gregory Lypny <gregory.lypny@videotron.ca>