DESTRUCTURING-BIND

[Marco Gidde]

The test for &REST comes too late or maybe the error check too early:

COMMON-LISP-USER> (destructuring-bind (&rest rest) nil
(format t "~%rest = ~s" rest))
Debugger invoked on condition of type SIMPLE-ERROR
Available restarts:

[lars-zgYzP9v7iJcdnm+ (Lars Brinkhoff)]

Fixed.

Note that some DESTRUCTURING-BIND features are still missing, e.g.
&aux arguments, and init-form and supplied-p for &key arguments.

[Marco Gidde]

Post by lars-zgYzP9v7iJcdnm+ (Lars Brinkhoff)
Note that some DESTRUCTURING-BIND features are still missing, e.g.
&aux arguments, and init-form and supplied-p for &key arguments.

It's rough, but enough (for now). Would be nice, if you could use the
stuff already implemented for defun's lambda-lists.

[lars-zgYzP9v7iJcdnm+ (Lars Brinkhoff)]

Post by Marco Gidde

Post by lars-zgYzP9v7iJcdnm+ (Lars Brinkhoff)
Note that some DESTRUCTURING-BIND features are still missing, e.g.
&aux arguments, and init-form and supplied-p for &key arguments.

It's rough, but enough (for now).

All variations of &key argument syntax are implemented now (unless
I've missed something).

Post by Marco Gidde
Would be nice, if you could use the stuff already implemented for
defun's lambda-lists.

Yes, right now there are three separate implementations of lambda list
handling (compiler, interpreter, destructuring-bind). It would be
very nice to unify them, but that would require some deep thought. It
always seem easier to just add another hack to make something new work.