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From: earl@cogdev.cognet.ucla.edu (Earl Williams)
Newsgroups: comp.sys.mac.hypercard
Subject: Why no 'case' statement in Hypertalk?  Suggestions?
Message-ID: <1991Jun4.234844.1280@cognet.ucla.edu>
Date: 4 Jun 91 23:48:44 GMT
Sender: news@cognet.ucla.edu
Reply-To: earl@cogdev.cognet.ucla.edu (Earl Williams)
Organization: UCLA Cognitive Science Program
Lines: 34

Is there really no 'case' statement in Hypertalk, or am I missing its
equivalent?  For simple keypress trapping, I'd like to do something like
the following:

on keyDown key
  case
    key = 'a' then do this else
    key = 'b' then do that else
    key = 'c' then do the other
  end
end keyDown

Instead, I have to use standard if-then-else statements which, when
formatted, give the false impression that I'm doing nesting.

on keyDown key
  if key = 'a' then do this else
    if key = 'b' then do that else
      if key = 'c' then do the other
      end if
    end if
  end if
end keyDown

This is extremely inelegant, if not confusing (when used in a more
complex example than this, of course.

Any suggestions?  What am I missing here?  Any help will be
much appreciated.

-----------------------------------------------------------
Earl M. Williams       ?8-)      UCLA Psychology Department
earl@cognet.ucla.edu             2344B Franz Hall
"No matter where you go, there you are."   -Buckaroo Banzai