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Ds\Pair::isEmpty — Returns whether the pair is empty
Returns whether the pair is empty.
This function has no parameters.
Returns true if the pair is empty, false otherwise.
Example #1 Ds\Pair::isEmpty() example
<?php
$a = new \Ds\Pair("a", 1);
$b = new \Ds\Pair();
var_dump($a->isEmpty());
var_dump($b->isEmpty());
?>
The above example will output something similar to:
bool(false) bool(true)