Re: MapThread and If
- To: mathgroup at smc.vnet.net
- Subject: [mg68031] Re: MapThread and If
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Fri, 21 Jul 2006 05:37:16 -0400 (EDT)
- Organization: Uni Leipzig
- References: <e9nkro$9u3$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
MapThread[If[#1 === #2, 0, tr] &, {{1, 2, 3}, {2,
2, {3, 4}}}]
MapThread[If[TrueQ[#1 == #2], 0, tr] &, {{1, 2,
3}, {2, 2, {3, 4}}}]
??
Regards
Jens
"Arkadiusz Majka"
<Arkadiusz.Majka at telekomunikacja.pl> schrieb im
Newsbeitrag news:e9nkro$9u3$1 at smc.vnet.net...
| Hi,
|
| Of course
|
| MapThread[If[#1 == #2, 0, tr] &, {{1, 2, 3}, {2,
2, 4}}]
|
| I get
|
| {tr, 0, tr}
|
| and for
|
| MapThread[If[#1 == #2, 0, tr] &, {{1, 2, 3}, {2,
2, {3, 4}}}]
|
| I get
|
| {tr, 0, If[3 == {3, 4}, 0, tr]}
|
| How I can build in above MapThread expression
information that if 'a'
| is equal to any element from the list {a,b,c,d}
the result is 0. In
| above example we have If[3=={3,4},0,tr] what I
want to be 0, because 3
| is equal to an element belonging to {3,4}.
|
| Thx,
|
| Arek
|