a if b;
c otherwise;
doesn't the ternary operator accomplish this already with b ? a : c; ? (And second example is just (my $o = b) ? a : b;)
Do you have any examples of uses of unless that have created traps?
For better or for worse, I personally actually use ! $x, !$x, and unless $x ... depends on how it reads in context, and how it fits in the coding style of whatever code i'm modifying..
Update: First one could also be: (b && a) || c; But it requires that a only ever return a true value.
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