Re: Mapping Functions That Take More Than One Argument
- To: mathgroup at smc.vnet.net
- Subject: [mg69884] Re: [mg69864] Mapping Functions That Take More Than One Argument
- From: Adriano Pascoletti <pascolet at dimi.uniud.it>
- Date: Tue, 26 Sep 2006 05:21:36 -0400 (EDT)
- References: <200609260459.AAA01823@smc.vnet.net>
Gregory,
look for Map in the help browser.
Map[Rest,{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}]
or
Map[Drop[#,1]&,{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}]
give what you want
Adriano Pascoletti
On 26 set 2006, at 06:59, 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
>
- References:
- Mapping Functions That Take More Than One Argument
- From: Gregory Lypny <gregory.lypny@videotron.ca>
- Mapping Functions That Take More Than One Argument