Re: a "before" slot

Steve Dekorte <[email protected]> Wed, 19 Feb 2014 11:42:47 -0800
Newsgroups	gmane.comp.lang.io
Message-ID	<[email protected]>
--IlqItLsP6A6fjtAn3lU86D6jkT977NWYWJt9vNi
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable


On Feb 19, 2014, at 1:28 AM, [email protected] wrote:
> Hi all,
>=20
> When there's no matching slot, the "forward" slot is activated.
>=20
> I have this idea about a "before" slot:
>=20
> If "before" doesn't exist, everything works as usual.
>=20
> If "before" exists, it is always activated (and it receives the message) =
before
> the slot lookup. Then, it produces a message (possibly the same) which wi=
ll be
> treated as usual.
>=20
> This could be used to test whether the sender as the "right" to access a
> particular slot, for example.

Hi Julien,

I like the idea. On my list for a 2nd gen Io is some form of support for ri=
ghts on all objects.

> Is there already a way to do this at user level?

You can get the same effect using a proxy to forward message to the real ob=
ject.=20
Io uses proxies for futures and supports turning all references of one obje=
ct to another.

> Also, would anybody have a little constructive criticism about Io?

Always welcome! :)

Steve




--IlqItLsP6A6fjtAn3lU86D6jkT977NWYWJt9vNi
Content-Type: text/html; charset=US-ASCII
Content-Transfer-Encoding: 7bit




<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
</head>






 
<body style="background-color: #fff;">
<span style="display:none">&nbsp;</span>

<!--~-|**|PrettyHtmlStartT|**|-~-->
<div id="ygrp-mlmsg" style="position:relative;">
  <div id="ygrp-msg" style="z-index: 1;">
<!--~-|**|PrettyHtmlEndT|**|-~-->

    <div id="ygrp-text" >
      
      
      <p><br>
On Feb 19, 2014, at 1:28 AM, [email protected] wrote:<br>
&gt; Hi all,<br>
&gt; <br>
&gt; When there&#39;s no matching slot, the &quot;forward&quot; slot is activated.<br>
&gt; <br>
&gt; I have this idea about a &quot;before&quot; slot:<br>
&gt; <br>
&gt; If &quot;before&quot; doesn&#39;t exist, everything works as usual.<br>
&gt; <br>
&gt; If &quot;before&quot; exists, it is always activated (and it receives the message) before<br>
&gt; the slot lookup. Then, it produces a message (possibly the same) which will be<br>
&gt; treated as usual.<br>
&gt; <br>
&gt; This could be used to test whether the sender as the &quot;right&quot; to access a<br>
&gt; particular slot, for example.<br>
<br>
Hi Julien,<br>
<br>
I like the idea. On my list for a 2nd gen Io is some form of support for rights on all objects.<br>
<br>
&gt; Is there already a way to do this at user level?<br>
<br>
You can get the same effect using a proxy to forward message to the real object. <br>
Io uses proxies for futures and supports turning all references of one object to another.<br>
<br>
&gt; Also, would anybody have a little constructive criticism about Io?<br>
<br>
Always welcome! :)<br>
<br>
Steve<br>
<br>
</p>

    </div>
     

    <!--~-|**|PrettyHtmlStart|**|-~-->
    <div style="color: #fff; height: 0;">__._,_.___</div>

          
  
    
    <div style="clear:both"> </div>

    <table cellspacing=4px style="margin-top: 20px; margin-bottom: 10px;">
      <tbody>
        <tr>
          <td style="font-size: 12px; font-family: arial; font-weight: bold; padding: 7px 5px 5px; color: #FFF; background-color: #F2F2F2; border: 1px solid #EAEAEA "  >
                          <a style="text-decoration: none; color: #2D50FD" href="http://groups.yahoo.com/group/iolanguage/post;_ylc=X3oDMTJxZ2V0NmI2BF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BG1zZ0lkAzEzMzQ2BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTM5MjgzODk3MA--?act=reply&messageNum=13346">Reply via web post</a>
                      </td>
          <td style="font-size: 12px; font-family: arial; padding: 7px 5px 5px; color: #FFF; background-color: #F2F2F2; border: 1px solid #EAEAEA; " >
            <a href="mailto:[email protected]?subject=Re%3A%20%5BIo%5D%20a%20%22before%22%20slot" style="text-decoration: none; color: #2D50FD;">
              Reply to sender            </a> 
          </td>
          <td style="font-size: 12px; font-family: arial; padding: 7px 5px 5px; color: #FFF; background-color: #F2F2F2; border: 1px solid #EAEAEA; ">
            <a href="mailto:[email protected]?subject=Re%3A%20%5BIo%5D%20a%20%22before%22%20slot" style="text-decoration: none; color: #2D50FD">
              Reply to group            </a> 
          </td>
          <td style="font-size: 12px; font-family: arial; padding: 7px 5px 5px; color: #FFF; background-color: #F2F2F2; border: 1px solid #EAEAEA; " >
            <a href="http://groups.yahoo.com/group/iolanguage/post;_ylc=X3oDMTJlNGwxMGxxBF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTM5MjgzODk3MA--" style="text-decoration: none; color: #2D50FD">Start a New Topic</a>
          </td>
          <td style="font-size: 12px; font-family: arial; padding: 7px 5px 5px; color: #2D50FD; background-color: #F2F2F2; border: 1px solid #EAEAEA; " >
                            <a href="http://groups.yahoo.com/group/iolanguage/message/13345;_ylc=X3oDMTM2OHM2OW4zBF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BG1zZ0lkAzEzMzQ2BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTM5MjgzODk3MAR0cGNJZAMxMzM0NQ--" style="text-decoration: none; color: #2D50FD;">Messages in this topic</a>
                (2)
                      </td>
        </tr>
      </tbody>
    </table>

        
<!------- Start Nav Bar ------>
<!-- |**|begin egp html banner|**| -->
<!-- |**|end egp html banner|**| -->




 

<!-- |**|begin egp html banner|**| -->
<div id="ygrp-vital" style="background-color: #f2f2f2; font-family: Verdana; font-size: 10px; margin-bottom: 10px; padding: 10px;">

    <span id="vithd" style="font-weight: bold; color: #333; text-transform: uppercase; "><a href="http://groups.yahoo.com/group/iolanguage;_ylc=X3oDMTJlY2l0Mmk2BF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTM5MjgzODk3MA--" style="text-decoration: none;">Visit Your Group</a></span>

     <ul style="list-style-type: none; margin: 0; padding: 0; display: inline;">
            <li style="border-right: 1px solid #000; font-weight: 700; display: inline; padding: 0 5px; margin-left: 0;">
      <span class="cat"><a href="http://groups.yahoo.com/group/iolanguage/members;_ylc=X3oDMTJmbGU0a2d1BF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzEzOTI4Mzg5NzA-?o=6" style="text-decoration: none;">New Members</a></span>
      <span class="ct" style="color: #ff7900;">1</span>
    </li>
                                              </ul>
  </div>


<div id="ft" style="font-family: Arial; font-size: 11px; margin-top: 5px; padding: 0 2px 0 0; clear: both;">
  <a href="http://groups.yahoo.com/;_ylc=X3oDMTJkNWFtcnZmBF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BHNlYwNmdHIEc2xrA2dmcARzdGltZQMxMzkyODM4OTcw" style="float: left;"><img src="http://l.yimg.com/ru/static/images/yg/img/email/new_logo/logo-groups-137x15.png" height="15" width="137" alt="Yahoo! Groups" style="border: 0;"/></a>
  <div style="color: #747575; float: right;"> &bull; <a href="http://info.yahoo.com/privacy/us/yahoo/groups/details.html" style="text-decoration: none;">Privacy</a> &bull; <a href="mailto:[email protected]?subject=Unsubscribe" style="text-decoration: none;">Unsubscribe</a> &bull; <a href="http://info.yahoo.com/legal/us/yahoo/utos/terms/" style="text-decoration: none;">Terms of Use</a> </div>
</div>

<!-- |**|end egp html banner|**| -->

  </div> <!-- ygrp-msg -->

 
  <!-- Sponsor -->
  <!-- |**|begin egp html banner|**| -->
  <div id="ygrp-sponsor" style="width:160px; float:right; clear:none; margin:0 0 25px 0; background: #fff;">

<!-- Start Recommendations -->
<div id="ygrp-reco">
     </div>
<!-- End Recommendations -->



  </div>   <!-- |**|end egp html banner|**| -->

  <div style="clear:both; color: #FFF; font-size:1px;">.</div>
</div>

  <img src="http://geo.yahoo.com/serv?s=97359714/grpId=6677476/grpspId=1705006764/msgId=13346/stime=1392838970" width="1" height="1"> <br>

<div style="color: #fff; height: 0;">__,_._,___</div>
<!--~-|**|PrettyHtmlEnd|**|-~-->

</body>

<!--~-|**|PrettyHtmlStart|**|-~-->
<head>
  <style type="text/css">
  <!--
  #ygrp-mkp {
  border: 1px solid #d8d8d8;
  font-family: Arial;
  margin: 10px 0;
  padding: 0 10px;
}

#ygrp-mkp hr {
  border: 1px solid #d8d8d8;
}

#ygrp-mkp #hd {
  color: #628c2a;
  font-size: 85%;
  font-weight: 700;
  line-height: 122%;
  margin: 10px 0;
}

#ygrp-mkp #ads {
  margin-bottom: 10px;
}

#ygrp-mkp .ad {
  padding: 0 0;
}

#ygrp-mkp .ad p {
  margin: 0;
}

#ygrp-mkp .ad a {
  color: #0000ff;
  text-decoration: none;
}
  #ygrp-sponsor #ygrp-lc {
  font-family: Arial;
}

#ygrp-sponsor #ygrp-lc #hd {
  margin: 10px 0px;
  font-weight: 700;
  font-size: 78%;
  line-height: 122%;
}

#ygrp-sponsor #ygrp-lc .ad {
  margin-bottom: 10px;
  padding: 0 0;
}

  #actions {
    font-family: Verdana;
    font-size: 11px;
    padding: 10px 0;
  }

  #activity {
    background-color: #e0ecee;
    float: left;
    font-family: Verdana;
    font-size: 10px;
    padding: 10px;
  }

  #activity span {
    font-weight: 700;
  }

  #activity span:first-child {
    text-transform: uppercase;
  }

  #activity span a {
    color: #5085b6;
    text-decoration: none;
  }

  #activity span span {
    color: #ff7900;
  }

  #activity span .underline {
    text-decoration: underline;
  }

  .attach {
    clear: both;
    display: table;
    font-family: Arial;
    font-size: 12px;
    padding: 10px 0;
    width: 400px;
  }

  .attach div a {
    text-decoration: none;
  }

  .attach img {
    border: none;
    padding-right: 5px;
  }

  .attach label {
    display: block;
    margin-bottom: 5px;
  }

  .attach label a {
    text-decoration: none;
  }
  
  blockquote {
    margin: 0 0 0 4px;
  }

  .bold {
    font-family: Arial;
    font-size: 13px;
    font-weight: 700;
  }

  .bold a {
    text-decoration: none;
  }

  dd.last p a {
    font-family: Verdana;
    font-weight: 700;
  }

  dd.last p span {
    margin-right: 10px;
    font-family: Verdana;
    font-weight: 700;
  }

  dd.last p span.yshortcuts {
    margin-right: 0;
  }

  div.attach-table div div a {
    text-decoration: none;
  }

  div.attach-table {
    width: 400px;
  }

  div.file-title a, div.file-title a:active, div.file-title a:hover, div.file-title a:visited {
    text-decoration: none;
  }

  div.photo-title a, div.photo-title a:active, div.photo-title a:hover, div.photo-title a:visited {
    text-decoration: none;
  }

  div#ygrp-mlmsg #ygrp-msg p a span.yshortcuts {
    font-family: Verdana;
    font-size: 10px;
    font-weight: normal;
  }

  .green {
    color: #628c2a;
  }

  .MsoNormal {
    margin: 0 0 0 0;
  }

  o {
    font-size: 0;
  }

  #photos div {
    float: left;
    width: 72px;
  }

  #photos div div {
    border: 1px solid #666666;
    height: 62px;
    overflow: hidden;
    width: 62px;
  }

  #photos div label {
    color: #666666;
    font-size: 10px;
    overflow: hidden;
    text-align: center;
    white-space: nowrap;
    width: 64px;
  }

  #reco-category {
    font-size: 77%;
  }

  #reco-desc {
    font-size: 77%;
  }

  .replbq {
    margin: 4px;
  }

  #ygrp-actbar div a:first-child {
   /* border-right: 0px solid #000;*/
    margin-right: 2px;
    padding-right: 5px;
  }

  #ygrp-mlmsg {
    font-size: 13px;
    font-family: Arial, helvetica,clean, sans-serif;
    *font-size: small;
    *font: x-small;
  }

  #ygrp-mlmsg table {
    font-size: inherit;
    font: 100%;
  }

  #ygrp-mlmsg select, input, textarea {
    font: 99% Arial, Helvetica, clean, sans-serif;
  }

  #ygrp-mlmsg pre, code {
    font:115% monospace;
    *font-size:100%;
  }

  #ygrp-mlmsg * {
    line-height: 1.22em;
  }

  #ygrp-mlmsg #logo {
    padding-bottom: 10px;
  }


  #ygrp-msg p a {
    font-family: Verdana;
  }

  #ygrp-msg p#attach-count span {
    color: #1E66AE;
    font-weight: 700;
  }

  #ygrp-reco #reco-head {
    color: #ff7900;
    font-weight: 700;
  }

  #ygrp-reco {
    margin-bottom: 20px;
    padding: 0px;
  }

  #ygrp-sponsor #ov li a {
    font-size: 130%;
    text-decoration: none;
  }

  #ygrp-sponsor #ov li {
    font-size: 77%;
    list-style-type: square;
    padding: 6px 0;
  } 

  #ygrp-sponsor #ov ul {
    margin: 0;
    padding: 0 0 0 8px;
  }

  #ygrp-text {
    font-family: Georgia;
  }

  #ygrp-text p {
    margin: 0 0 1em 0;
  }

  #ygrp-text tt {
    font-size: 120%;
  }

  #ygrp-vital ul li:last-child {
    border-right: none !important; 
  } 
  -->
  </style>
</head>

<!--~-|**|PrettyHtmlEnd|**|-~-->
</html>
<!-- end group email -->


--IlqItLsP6A6fjtAn3lU86D6jkT977NWYWJt9vNi--