cozylife/hackfastalgos

<?HH
/**
 * Hack Fast Algos
 *
 * Implementation of a string buffer (String Buffer is not useful in PHP or Hack.
 * Languages like Java and C++ can benefit from one.)
 * 
 * Learn more @link http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/StringBuffer.html
 */

namespace HackFastAlgos\DataStructure;

class StringBuffer
{
    private array<string> $bufferData = [];

    public function append(string $string)
    {
        $this->bufferData[] = $string;
    }

    public function __toString()
    {
        return implode('', $this->bufferData);
    }

    public function reset()
    {
        $this->bufferData = [];
    }

    public function isEmpty() : bool
    {
        return count($this->bufferData) === 0;
    }
}