A related operator idiom for assuming a default value:
$myVar = $somevalue || 'default';
Technically, it's not quite the same as the previous statements, but I'd say it is more commonly used than the trinary form.
There's whether something exists, whether it is defined (has a value different from undef), whether it has a "true" value (anything but undef or '' or 0 or '0'), and whether it's a reference or a non-referential scalar.
--
[ e d @ h a l l e y . c c ]
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