Re: StringCases matching on portions of sublist?
- To: mathgroup at smc.vnet.net
- Subject: [mg106695] Re: [mg106646] StringCases matching on portions of sublist?
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Thu, 21 Jan 2010 04:53:43 -0500 (EST)
- Reply-to: hanlonr at cox.net
z = {
{"Thu Nov 19 12:09:23 GMT 2009", 7492, 0, 0},
{"Thu Jan 07 13:48:21 GMT 2010", 9225, 3, 0},
{"Thu Dec 17 09:30:52 GMT 2009", 8735, 1, 0}};
Select[z, StringMatchQ[#[[1]], "*Nov*"] &]
{{"Thu Nov 19 12:09:23 GMT 2009", 7492, 0,
0}}
Cases[z, _?(StringMatchQ[#[[1]], "*Nov*"] &)]
{{"Thu Nov 19 12:09:23 GMT 2009", 7492, 0,
0}}
Bob Hanlon
---- Jason Ledbetter <jasonbrent at gmail.com> wrote:
=============
Folk,
I'm trying to write a function to narrow down some data by timestamp but I'm
having some trouble getting this to work.
My data is a list of lists with the first member of each sublist being a
date stamp. I was hoping to use StringCases to match but I'm apparently
missing something here.
Example data is as follows:
z={{"Thu Nov 19 12:09:23 GMT 2009", 7492, 0,
0}, {"Thu Jan 07 13:48:21 GMT 2010", 9225, 3,
0}, {"Thu Dec 17 09:30:52 GMT 2009", 8735, 1, 0}}
I've tried the following:
StringCases[z, {"*Nov",___}]
which returns:
String or list of strings expected at position 1 in StringCases. This makes
sense to me.. so I tried:
StringCases[z[[All,1]], ___~~Nov~~___]
which returns:
{{"Thu Nov 19 12:09:23 GMT 2009"}, {}, {}}
How can this be modified to return the full sublist where the first element
of the sublist matches a string pattern?
-jbl