On Jun 30, 2014, at 12:17 PM, Sunita Pradhan wrote:
> Thanks Jim. It is working but why a array is required here?
>
Please respond to the list and not to me personally. That way, everybody will
see your question, and somebody else can answer.
> >
> > Try this:
> >
> > $c = () = $line =~ /\b$w\b/g;
The empty array is necessary to put the return value of the binding operator
'=~' into list context. Without it, the return value is in scalar context and
returns just a 1 ('true'). In list context, the binding operator returns a list
of the matched strings. When that is converted to scalar context by the
assignment to $c, it becomes the size of the list.
See 'perldoc perlop', search for "Regexp Quote-Like Operators", and scroll down
to the section titled 'Matching is list context'.
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