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@ 2014-11-22T01:56:09Z

<?hh
class Test{
    public static function process_single(mixed $arg):string{
        if(is_array($arg){
            $return = [];
            foreach($arg as $key => $value){
                $return[] = "{$key}: ".self::process_single($value);
            }
            return '{'.implode(',',$return).'}';
        })
        return (string)$arg;
    }
}

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