<html>
  <head>
    <meta content="text/html; charset=windows-1252"
      http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    Yes, you can do:<br>
    <br>
    b_nand(X,Y) -> <br>
        b_not(b_and(X,Y)).<br>
    <br>
    Ivan<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 26/01/2015 17:01, Roelof Wobben
      wrote:<br>
    </div>
    <blockquote cite="mid:54C672F6.6020304@home.nl" type="cite">
      <meta content="text/html; charset=windows-1252"
        http-equiv="Content-Type">
      <div class="moz-cite-prefix">Yes. I have learned the
        wildcardpattern but also there was a text beneath it saying not
        to use it for defensive programming.<br>
        <br>
        oke I have misread it and have to use the not and and.<br>
        <br>
        Or can i do things like <br>
        <br>
        b_nand { true, true) -> <br>
            b-not(b_and(true, true) <br>
        <br>
        Roelof<br>
        <br>
        <br>
        <br>
        Bob Ippolito schreef op 26-1-2015 om 17:27:<br>
      </div>
      <blockquote
cite="mid:CACwMPm8awD3A8gLbBkN=A5A8+z86KMi8h0fbL3586u=fUF33-Q@mail.gmail.com"
        type="cite">
        <div dir="ltr">Here's a hint:
          <div><br>
          </div>
          <div><a moz-do-not-send="true"
              href="http://en.wikipedia.org/wiki/NAND_gate">http://en.wikipedia.org/wiki/NAND_gate</a><br>
          </div>
          <div><br>
          </div>
          <div>You already have an inverter by another name.</div>
          <div><br>
          </div>
          <div>Although in this case I think implementing NAND as a
            pattern match would be quite simple. Have you learned about
            wildcard patterns yet (the _ symbol)?</div>
          <div><br>
          </div>
        </div>
        <div class="gmail_extra"><br>
          <div class="gmail_quote">On Mon, Jan 26, 2015 at 8:21 AM,
            Roelof Wobben <span dir="ltr"><<a moz-do-not-send="true"
                href="mailto:r.wobben@home.nl" target="_blank">r.wobben@home.nl</a>></span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
              <br>
              I now have to make a nand boolean with pattern matching.<br>
              I have found out that nand is true except when its true
              and true.<br>
              <br>
              as hint I get to implement nand using and and or.<br>
              <br>
              Can someone give me a hint how to do this ?<br>
              <br>
              <br>
              My code looks like this at the moment :<br>
              <br>
              -module(boolean).<br>
              <br>
              -export([b_not/1, b_and/2, b_or/2]).<br>
              <br>
              b_not(true) -><br>
                false;<br>
              <br>
              b_not(false) -><br>
                true.<br>
              <br>
              b_and(true, true) -><br>
                true;<br>
              <br>
              b_and(true, false) -><br>
                false;<br>
              <br>
              b_and(false, true) -><br>
                false;<br>
              <br>
              b_and(false, false) -><br>
                false.<br>
              <br>
              <br>
              b_or(true, true) -><br>
                true;<br>
              <br>
              b_or(true, false) -><br>
                true;<br>
              <br>
              b_or(false, true) -><br>
                true;<br>
              <br>
              b_or(false, false) -><br>
                false.<br>
              <br>
              <br>
                  Roelof<br>
              <br>
              _______________________________________________<br>
              erlang-questions mailing list<br>
              <a moz-do-not-send="true"
                href="mailto:erlang-questions@erlang.org"
                target="_blank">erlang-questions@erlang.org</a><br>
              <a moz-do-not-send="true"
                href="http://erlang.org/mailman/listinfo/erlang-questions"
                target="_blank">http://erlang.org/mailman/listinfo/erlang-questions</a><br>
            </blockquote>
          </div>
          <br>
        </div>
      </blockquote>
      <br>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
erlang-questions mailing list
<a class="moz-txt-link-abbreviated" href="mailto:erlang-questions@erlang.org">erlang-questions@erlang.org</a>
<a class="moz-txt-link-freetext" href="http://erlang.org/mailman/listinfo/erlang-questions">http://erlang.org/mailman/listinfo/erlang-questions</a>
</pre>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
============================================================
Ivan A. Uemlianin PhD
Llaisdy
Speech Technology Research and Development

                    <a class="moz-txt-link-abbreviated" href="mailto:ivan@llaisdy.com">ivan@llaisdy.com</a>
                        @llaisdy
                         llaisdy.wordpress.com
              github.com/llaisdy
                     <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/ivanuemlianin">www.linkedin.com/in/ivanuemlianin</a>

                        festina lente
============================================================ </pre>
  </body>
</html>