Re: patterns
- To: mathgroup at smc.vnet.net
- Subject: [mg101880] Re: [mg101864] patterns
- From: DrMajorBob <btreat1 at austin.rr.com>
- Date: Mon, 20 Jul 2009 19:20:26 -0400 (EDT)
- References: <200907201000.GAA28316@smc.vnet.net>
- Reply-to: drmajorbob at bigfoot.com
A bit awkward, but it works:
Cases[{11.2, {dUp[1] -> 0., dUp[2] -> 0., dUp[3] -> 0., dUp[4] -> 2.1,
dUp[5] -> 0., dUm[1] -> 0., dUm[2] -> 2.6, dUm[3] -> 0.5,
dUm[4] -> 0., dUm[5] -> 0., dLp[1] -> 0., dLp[2] -> 0.,
dLp[3] -> 0., dLp[4] -> 1.4, dLp[5] -> 0., dLm[1] -> 0.,
dLm[2] -> 3.1, dLm[3] -> 1.5, dLm[4] -> 0., dLm[5] -> 0.,
a[1] -> 6.75, a[2] -> 1.25, c[1] -> 1.65, c[2] -> 0.15}} /.
Rule -> rule, rule[(a | c)[x_], b_], Infinity] /. rule -> Rule
{a[1] -> 6.75, a[2] -> 1.25, c[1] -> 1.65, c[2] -> 0.15}
Bobby
On Mon, 20 Jul 2009 05:00:34 -0500, Francisco Gutierrez
<fgutiers2002 at yahoo.com> wrote:
> Dear Group:
> Ther output of a code I made (which includes a minimization) is of the
> following guise:
> {11.2,{dUp[1]->0.,dUp[2]->0.,dUp[3]->0.,dUp[4]->2.1,dUp[5]->0.,dUm[1]->0.,dUm[2]->2.6,dUm[3]->0.5,dUm[4]->0.,dUm[5]->0.,dLp[1]->0.,dLp[2]->0.,dLp[3]->0.,dLp[4]->1.4,dLp[5]->0.,dLm[1]->0.,dLm[2]->3.1,dLm[3]->1.5,dLm[4]->0.,dLm[5]->0.,a[1]->6.75,a[2]->1.25,c[1]->1.65,c[2]->0.15}}
> Of this output, I want to capture only the a's and the c's. There is an
> easy and sloppy manner, but general and I think not slow, to do this
> because they appear always at the end of the output. But I wonder if it
> were possible to use pattern matching to make the same thing, something
> of the sort of Cases[myoutput, a[__]]. Is it possible? How can it be
> done?
> Thanks
> Francisco
>
--
DrMajorBob at bigfoot.com
- References:
- patterns
- From: Francisco Gutierrez <fgutiers2002@yahoo.com>
- patterns