Getting right to the dirty part, here is the code:

{
        my @FIELDS = qw( foo bar baz);
        sub set_params
        {
                { map { $_ => $_ } @FIELDS };
        }
}
my $params = set_params; 
use Data::Dumper "Dumper"; 
print Dumper($params);

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(This is a sanitized version, but I know that it demonstrates the problem. The orginal had all the CGI parameters in @FIELDS, and the value in each hash entry was the CGI param.)

I'm expecting set_params() to return a hashref. What I'm seeing is what you would get if you put a list in scalar context (the number of elements in the list--6 in the above example).

It works when set_params() is changed to:

my $params = { map { $_ => $_ } @FIELDS }; 
return $params;

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I'm not against using the above in the code, but I am interested in why the orginal didn't work, i.e., what bit of toke.c magic did I step on this time?

$ perl -v

This is perl, v5.8.2 built for i686-linux

[download]

----
: () { :|:& };:

Note: All code is untested, unless otherwise stated

In reply to Want a Hashref. Getting a List in Scalar Context. by hardburn

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