Hello Argel,

In addition to the potential predecence problems with or, it should be noted that Perl’s // (Logical Defined-Or) operator has no low-precedence equivalent, so if you get in the habit of using or in place of ||, you may more easily overlook situations in which // is a better fit:

13:09 >perl -Mstrict -wE "my ($y, $z); my $x = (defined $y or defined 
+$z or 'default'); say $x;"
default
[download]

vs.

13:09 >perl -Mstrict -wE "my ($y, $z); my $x = $y // $z // 'default'; 
+say $x;"
default

13:09 >
[download]

As a rule I use and and or for flow control only:

open(my $fh, '<', $filename) or die "Cannot open file '$filename' for 
+reading: $!";
[download]

Hope that helps,

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