my @sub_locs = grep { $_ } map { /taxman\.add\.subloc\.(.*)/ } @sessio
+n_keys;

[download]
Maybe a "bit more intuitive", but "wrong" if the value after taxman string might be empty or the value "0". Did you mean instead: 
my @sub_locs = grep { defined $_ } map { /taxman\.add\.subloc\.(.*)/ }
+ @session_keys;

[download]
perhaps?

And of course, as I'm seeing this, the grep isn't even necessary, since on a failed match, the match returns an empty list! 

my @sub_locs = map { /taxman\.add\.subloc\.(.+)/ } @session_keys;

[download]
is enough!

-- Randal L. Schwartz, Perl hacker

In reply to Re: Re: Re: Using map by merlyn
in thread Using map by blackjudas

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