Re: Re: Re: easier method for
- To: mathgroup at smc.vnet.net
- Subject: [mg94094] Re: [mg94068] Re: [mg94023] Re: easier method for
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Fri, 5 Dec 2008 05:27:20 -0500 (EST)
- Reply-to: hanlonr at cox.net
Select "@@@"
Press F1
Click on "Apply" (the only return that I get)
Open MORE INFORMATION
Third bullet is
"f@@@expr is equivalent to Apply[f,expr,{1}]"
Bob Hanlon
---- Lou Talman <talmanl at mscd.edu> wrote:
=============
On Dec 1, 2008, at 10:42 PM, Jens-Peer Kuska wrote:
> list1 = {a, b, b, e};
> list2 = {{a, aP}, {b, bP}, {c, cP}, {d, dP}, {e, eP}, {f, fP}};
>
> list1 /. Rule @@@ Select[list2, MemberQ[list1, First[#]] &]
Is there an easier way than looking up every Mathematica instruction
that might be relevant for finding out what instruction shorthand
like "@@@" represents? The obvious "?@@@" fails. (I finally found
that it's a special case of Map, but only after checking all of the
other things listed by "?Map*" because Map itself seemed least likely.)
--Lou Talman
Department of Mathematical & Computer Sciences
Metropolitan State College of Denver
<http://clem.mscd.edu/%7Etalmanl>
--
Bob Hanlon