我想刪除所有引用一個內存位置的對象。如果我不知道他們的全名，該怎麼辦？ class Foo(object):
pass
class Bar(object):
pass
a = Foo()
b = a
c = Bar()
c.a_ref = a
c.b_ref = b
for item in a, b, c.a_ref, c.b_ref:
prin
考慮下面的代碼片段： private void foo() {
A a = new A();
WeakReference<A> weakA = new WeakReference<A>(a);
a = null;
while (true) {
if (weakA.get() != null)
System.out.println(