[tpm] String matching at start or middle or end of list

[Stuart Watt]

The other simple solution is:

my ($match) = ",$s," =~ m/,foo,/;

--S


On 2013-04-29, at 2:17 PM, Antonio Sun wrote:

> that'll match cases like, 
> 
> bar,and foo etc,baz
> 
> I'm still think my answer is the closest, given what's required in OP.
> 
> 
> On Mon, Apr 29, 2013 at 2:00 PM, Stuart Watt <stuart at morungos.com> wrote:
> I've used \b for this. i.e., /\bfoo\b/ - the \b is a zero-width word/nonword boundary, and I use it a lot to anchor at separators. 
> 
> All the best
> Stuart
> 
> 
> On 2013-04-29, at 1:52 PM, Indy Singh wrote:
> 
>> Hi All,
>>  
>> Following Alans suggestion, I am going to repost the question with some test cases.
>>  
>> I am looking for a way to match a string that appears in a comma separated list. The string may may appear at the start or middle, end or nowhere on a list. I have stumbled along and made this work in the past, now I am looking for the clean and proper way to do it.
>> 
>> One of the unpleasant side effects of putting a list with alternatives at the start .e.g. '(^|,)' , is that it creates an undesired capture string. Is it possible to avoid creating the capture string?
>>  
>> Test code below. Anywhere where ‘foo’ appears should match but ‘food’ should not match
>>  
>> foreach $s ('foo,bar,baz', 'bar,foo,baz', 'bar,baz,foo', 'bar,food,baz') {
>>     print "s=$s ";
>>  
>>     my ($match) = $s =~ /some reg expression or perl code here to match foo/;
>>  
>>     if ($match) {
>>         print "match=$match\n";
>>     } else {
>>         print "no match\n";
>>     }
>> }
>>  
>>  
>> Indy Singh
>> IndigoSTAR Software -- www.indigostar.com
>> _______________________________________________
>> toronto-pm mailing list
>> toronto-pm at pm.org
>> http://mail.pm.org/mailman/listinfo/toronto-pm
> 
> 
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