Re: Is this the right behavior?

• To: info-dylan@ai.mit.edu
• Subject: Re: Is this the right behavior?
• From: Jonathan Bachrach <jrb@functionalobjects.com>
• Date: Tue, 28 Dec 1999 23:02:02 -0500
• In-Reply-To: <slrn86cpoe.p3t.neelk@brick.cswv.com>
• Sender: owner-info-dylan@ai.mit.edu

At 01:45 PM 12/26/99 -0500, you wrote:
>In Gwydion Dylan, the program:
>
>   define method foo() => ()
>     #"foo";
>   end method foo;
>
>   define method main(appname, #rest arguments)
>     let bar = foo();
>     format-out("%=\n", bar);
>   end method main;
>
>compiles without errors and when run prints "#f" to standard output.
>
>I was surprised because I had declared foo() to yield no values, and
>intuitively I'd expect this code to cause an error. When I checked the
>DRM, I couldn't figure out whether or not this was legal behavior.
>Can anyone help un-confuse me?

Yes this is the right behavior.  Page 43 of the DRM states:

   if there are more bindings than there are values,
   then the extra bindings are initialized to #f. ...

Jonathan Bachrach

• Is this the right behavior?
• From: neelk@brick.cswv.com (Neel Krishnaswami)

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