Re^3: Difference between two arrays - is there a better way?

in reply to Re^2: Difference between two arrays - is there a better way?
in thread Difference between two arrays - is there a better way?

@cities = (qw(London Oslo Paris Amsterdam Berlin ));
@visited = (qw(Berlin Oslo));
    
say "Still need to visit:",
   grep { ! ({ $_, 0 } ~~ @visited) } @cities;
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Re^4: Difference between two arrays - is there a better way? by SimonSaysCake (Beadle) on Jun 28, 2016 at 17:42 UTC
That's certainly wins for brevity and works a treat but it would seem the smartmatch op is (still) considered deprecated/experimental: https://metacpan.org/pod/release/RJBS/perl-5.18.0/pod/perldelta.pod#The-smartmatch-family-of-features-are-now-experimental -Simon	[reply]

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