in reply to Re^6: Variable assignment error checking
in thread Variable assignment error checking

$var = $var || func( $var );
$var = func( $var ) || $var;

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They're certainly logically equivalent if we disregard the short-circuiting nature of operators. (Though the mathematics branch of logic generally deals with no other return values than true and false...)

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Re^8: Variable assignment error checking
by hdb (Monsignor) on Dec 15, 2013 at 10:41 UTC

    As you say, only if we only worry about true or false... 

    my $var = 5;
sub func { 10 };

print $var || func($var), "\n";
print func($var) || $var, "\n";

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[d/l]

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