another one for later reference: What A Wonderful World: Bitmasks!

After a long search found what I was looking for: Book update: "Exploring Programming Language Architecture in Perl" and Exploring Programming Language.. posting them here, in case I forget.

Recently I enabled the "Free Nodelet". Everytime I wanted to post a question, I couldn't recall the What shortcuts can I use for linking to other information? link and took a lot of digging to get to the page. However, now I have a direct link to the shortcuts page, right under the text area, via this code:

<script language="javascript">
    var lb = "\x5B";
    var rb = "\x5D" 

function getMyTable(){
  //get the table
  var tables = document.getElementsByTagName("table");
  var mytable; 
  var evalstr = "tables" + lb + "i" + rb + ".className";

  for(var i=0;i<tables.length;i++){
    var class = eval(evalstr);
    if(class == "addnewform"){
      mytable = eval("tables" + lb + "i" + rb);
      return mytable
    }
  }
  return mytable;
}
function add_shortcut(){

 var elements = getMyTable();

  if(elements){
    var row = elements.insertRow(elements.rows.length);
    var cell = row.insertCell(0);
    cell.innerHTML = '[id://43037]';
  }

}

// Execute our snippets after the page is parsed.
var old_onload = window.onload;
window.onload = function() {
   if (old_onload != null)
      old_onload();

   add_shortcut();
};


</script>

[id://43037]</br><hr>
<a href="http://perlmonks.org/?node=Free%20Nodelet%20Settings">Free No
+delet Settings</a>
[download]

The code to insert the link, in the html DOM is mine, however I forgot from where I copied the rest of the ideas, especially "lb"/"rb" and the "onload" trick. Credit goes to whoever first created it. Thanks

Found this line in some old files:

#!/usr/local/bin/perl

eval 'exec /opt/perl/5.6.1/bin/perl  -S $0 ${1+"$@"}'
    if 0; # not running under some shell
[download]

was perplexed, till ambrus and corion helped me (over monk chat, no less). The long and short of it is, some shell's might not know what to do with #! , hence the eval. You can read all about it here:

• perlrun
• perl magic header

A pop-up menu with list of online IM users for gaim. This menu can be activated by a key board shortcut, which can be coupled to gaim-remote. (http://gaim.sourceforge.net/api/perl-howto.html)