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MathGroup Archive 2006

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Mapping Functions That Take More Than One Argument

  • To: mathgroup at smc.vnet.net
  • Subject: [mg69864] Mapping Functions That Take More Than One Argument
  • From: Gregory Lypny <gregory.lypny at videotron.ca>
  • Date: Tue, 26 Sep 2006 00:59:23 -0400 (EDT)

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


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