Weak reference facility in Emacs.

Weak reference facility in Emacs.

[Zhu Zihao]

Weak reference is good idea to deal with cycle reference. Though Emacs has GC,
but weak reference is also useful when I want to use RAII pattern in Emacs (via
finalizer).

hash table has option to make reference in it become weak. But it's not
so convenience if user just want a weak reference of *ONE* lisp object.

Would you interest in some lisp library to wrap a weak table to provide weak
referenece utils. Or it's better to implement it in alloc.c?

Re: Weak reference facility in Emacs.

[John Wiegley]

>>>>> "ZZ" == Zhu Zihao <all_but_last@163.com> writes:

ZZ> Would you interest in some lisp library to wrap a weak table to provide
ZZ> weak referenece utils. Or it's better to implement it in alloc.c?

I would prefer this not to be alloc.c, but to use existing idioms until it
proves to be of enough general use that it warrants optimization by moving
into the C code.

-- 
John Wiegley                  GPG fingerprint = 4710 CF98 AF9B 327B B80F
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