[Chicken-janitors] Re: #443: #!rest and #!key are not internally consistent

[Chicken Trac]

#443: #!rest and #!key are not internally consistent
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  Reporter:  alanpost        |       Owner:        
      Type:  defect          |      Status:  closed
  Priority:  minor           |   Milestone:  4.7.0 
 Component:  core libraries  |     Version:  4.6.x 
Resolution:  worksforme      |    Keywords:        
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Changes (by felix):

  * status:  new => closed
  * resolution:  => worksforme


Comment:

 Replying to [comment:4 alanpost]:

 > Essentially, it is impossible to have both #!key arguments and a
 variable number of positional arguments.

 It is possible if you deconstruct the argument list completely inside the
 callee (just using #!rest/#!key and no positional arguments). I'm not sure
 I understand completely, but what do you mean with "variable number of
 positional arguments"? For the same procedure? Varying over what?

 >
 > I understand that this follows from the *implementation* of #!rest and
 #!key, but from the perspective of someone using these features, it looks
 arbitrary, particularly when "middle+rest (2)" is the only "middle"* test
 that does so.

 It's not arbitrary at all, it's perfectly well defined in the DSSSL
 language and implemented like this in several Scheme systems.

-- 
Ticket URL: <http://bugs.call-cc.org/ticket/443#comment:6>
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