(PECL ds >= 1.0.0)
Ds\Set::__construct — Creates a new instance
Creates a new instance, using either a traversable
object or an array for the initial values.
valuesA traversable object or an array to use for the initial values.
Example #1 Ds\Set::__construct() example
<?php
$set = new \Ds\Set();
var_dump($set);
$set = new \Ds\Set([1, 2, 3]);
var_dump($set);
?>
以上例程的输出类似于：
object(Ds\Set)#1 (0) {
}
object(Ds\Set)#2 (3) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
}