As an aside: Arrays are treated in the same way when doing smart matching: 
use feature qw(say);

say qq(no match) unless (1, 4, 18) ~~ 4;
say qq(match) if (1, 4, 18) ~~ 18;

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results in 
no match

match

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I tripped over this, too, see http://www.perlmonks.org/?node_id=687969.

In reply to Re^2: ||= oddity by jds17
in thread ||= oddity by throop

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