On May 23, 2007, at 10:44 AM, Dan Muresan wrote:
The zeroth "slot" of the record contains the symbol representing its
type. When you evict the record, you also evict the symbol. The
interned and uninterned symbols are not equal, hence the type-check
failure when it is inspected.
(equal? :pare (object-evict :pare)) => #f
You could set the slot-value back to the non-evicted, interned
symbol:
Well, the Chicken manual warns against setting slots in evicted
objects to non-evicted data, so I'm not gonna do it.
I think the right thing to do would be to change the SRFI-9
implementation so that, for evicted objects, it skips the record
type test.
The misc-extn egg provides SRFI-9 workalikes that "... skips the
record type test."
Best,
Dan
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