der">
          <span class="name "><a href="dart-convert/AsciiEncoder-class.html">AsciiEncoder</a></span>         
        </dt>
        <dd>
          This class converts strings of only ASCII characters to bytes.
        </dd>
        <dt id="Base64Codec">
          <span class="name "><a href="dart-convert/Base64Codec-class.html">Base64Codec</a></span>         
        </dt>
        <dd>
          A <a href="https://tools.ietf.org/html/rfc4648">base64</a> encoder and decoder. <a href="dart-convert/Base6