Re: Using Cases or Position to Find Strings in a List of Strings
- To: mathgroup at smc.vnet.net
- Subject: [mg119525] Re: Using Cases or Position to Find Strings in a List of Strings
- From: Gregory Lypny <gregory.lypny at videotron.ca>
- Date: Wed, 8 Jun 2011 07:12:26 -0400 (EDT)
Hi Patrick, Yes, I suppose I could map StringCases across the list of strings and then collect all of the results that are not null, but I was hoping it could be done directly with Cases. Thanks, Gregory On Tue, Jun 7, 2011, at 6:51 AM, Patrick Scheibe wrote: > Hi, > > what about using StringCases and StringPosition? > > Cheers > Patrick > > On Tue, 2011-06-07 at 06:48 -0400, Gregory Lypny wrote: >> Hello everyone, >> >> I have a list of strings called myListOfFilePaths and I want to find >> which one of those strings ends in ".DS_Store" (a hidden file created by >> the Mac OS). I can pick it off using Select as >> >> Select[myListOfFilePaths, StringMatchQ[#, ___ ~~ ".DS_Store" ~~ >> EndOfString] &] >> >> but I can't do it using Cases or Position >> >> Cases[myListOfFilePaths, ___ ~~ ".DS_Store" ~~ EndOfString] >> >> Position[myListOfFilePaths, ___ ~~ ".DS_Store" ~~ EndOfString] >> >> despite the fact that Head[___ ~~ ".DS_Store" ~~ EndOfString] is StringExpression. What am I doing wrong? >> >> Regards, >> >> Gregory >> > >