Re: How to store matched $1 values one by one to array?

[johngg]

Note that another, perhaps safer, way of capturing everything after "agent_id=>" up to but not including a comma is to use use a negated character class ([^,]+) meaning one or more of anything that isn't a comma rather than a non-greedy match of anything (.+?). You can also populate your array, let's call it @agents, in one fell swoop by using a global match (g flag) and a map within which we substitute away the double-quotes.

$ perl -Mstrict -Mwarnings -MData::Dumper -e '
> my $line =
>    q{xxx:agent_id=>foo,yyy:agent_id=>b"a"r,zzz:agent_id=>"baz",qqq};
> 
> my @agents =
>    map { s{"}{}g; $_ }
>    $line =~ m{ :agent_id=> ( [^,]+ ) }xg;
> 
> print Data::Dumper->Dumpxs( [ \ @agents ], [ qw{ *agents } ] );'
@agents = (
            'foo',
            'bar',
            'baz'
          );
$

I hope this is helpful.

[AnomalousMonk]

A minor variation using the  \K (5.10+) and  s///r (5.14+) regex operators, and no capture groups. (Note: I use  \x22 instead of  " (double-quote) in the  s///r substitution because the Windoze CLI gets a little freaky over unpaired double-quotes.)

>perl -wMstrict -MData::Dump -le
"my $line =
   q{xxx:agent_id=>foo,yyy:agent_id=>b\"a\"r,zzz:agent_id=>\"baz\",qqq
+};
 ;;
 my @agents =
   map s{\x22}{}xmsgr,
   $line =~ m{ :agent_id=> \K  [^,]+ }xmsg;
 ;;
 dd \@agents;
"
["foo", "bar", "baz"]