Loading via http

Smalltalk-76 can load code from HTML pages, e.g. from a Swiki like this one (well, actually this is a rendered page from an actual Swiki).
Applets can only load code from the same server they were loaded from.
Wrap the code in PRE tags, and wrap the rest in prose. ;-)

To try, either

• copy the expression  Host load: 'http://home.netsurf.de/helge.horch/esug/signum.html' from this page, start the jar as an Application, paste and do it. The Application can load code from any server.
• in the applet (as it can be started directly from here), you'll have to type in the expression Host load: 'http://home.netsurf.de/helge.horch/esug/signum.html' (the applet can't access your clipboard, thus the type-in). Then evaluate the expression with "do it". Note that the applet will only be allowed to load code from the server where the applet itself came from.
  
  This is just some sample code...
  

  
  
  Integer understands: 'signum
  
     [self = 0 ? [^0].
  
     self > 0 ? [^1].
  
     ^`1]'   "backquote denotes unary minus"
  
  

  
  Some more explanations can go here, as they're not in PRE tags, they're ignored by the code loader. This is a poor man's version of literate programming.