Re: Finding the Position of Elements in a List that
- To: mathgroup at smc.vnet.net
- Subject: [mg102223] Re: [mg102157] Finding the Position of Elements in a List that
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sat, 1 Aug 2009 04:04:13 -0400 (EDT)
- Reply-to: hanlonr at cox.net
listOfStrings = {"The cat is here.", "It's not here.",
"Not in the catalogue,", "Where is the cat?"};
First /@ Position[
StringPosition[listOfStrings, "cat"], {_, _}]
{1,3,4}
Bob Hanlon
---- Gregory Lypny <gregory.lypny at videotron.ca> wrote:
=============
Hello everyone,
Suppose I have a list of strings, say, sentences such as
listOfStrings = {"The cat is here.", "It's not here.", "Not in the
catalogue,", "Where is the cat?"}
and a string I want to search for
searchString = "cat"
I can use StringCases to pick off the elements that contain the search
string
StringCases[listOfStrings, __ ~~ searchString ~~ ___]
{{"The cat is here."}, {}, {"Not in the catalogue,"}, {"Where is the
cat?"}}
But what if I just want to know the positions of the elements that are
hits? In this case, it's
{1, 3, 4}
If I use
Position[listOfStrings, ___ ~~ theString ~~ ___]
I get
{}
which is not what I expect. Also how can I have my searchString
treated like it is a word so that 3 is not one of the hits?
Any hints would be much appreciated.
Gregory