YuCheng Hu
8fe9b866f2
+YUCHENG HU+ git-svn-id: https://svn.code.sf.net/p/hawebs/svn@353 a2543c7e-f6e9-4f8a-8bff-1ffc34733512
34 lines
648 B
PHP
34 lines
648 B
PHP
<?php
|
|
//Todo: find a decent set implementation for php
|
|
class Set{
|
|
public function __construct($arr){
|
|
$this->store = array();
|
|
foreach($arr as $el){
|
|
$this->store[$el] = $el;
|
|
}
|
|
}
|
|
|
|
public function add($value){
|
|
$this->store[$value] = $value;
|
|
}
|
|
|
|
public function member($value){
|
|
return array_key_exists($value, $this->store);
|
|
}
|
|
|
|
public function union($otherSet){
|
|
return new Set(array_merge($this->store, $otherSet->store));
|
|
}
|
|
|
|
public function unionInPlace($otherSet){
|
|
$this->store = $this->union($otherSet)->store;
|
|
}
|
|
|
|
public function remove($value){
|
|
unset($this->store[$value]);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
?>
|