That reminds me that some time back I tried to get a grip on hash slices.

In similar use to your example:

my @intersection = grep {defined} @{{map {$_=>$_} @a}}{@b}

Though in everyday life I prefer your method, since I tend to get headache from thinking about that slices and also definitely got the syntax and/or semantics wrong the first time always.

In reply to Re^2: What I Most Recently Learned in Perl, But Should Have Already Known by pKai
in thread What I Most Recently Learned in Perl, But Should Have Already Known by liverpole

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