Function SharedPtr.weakCount
Returns the number of different SharedPtr
instances
ControlType .Weak weakCount(This)() const nothrow @nogc @property scope @safe;
Returns the number of different SharedPtr
instances (this
included) managing the current object or 0
if there is no managed object.
Examples
SharedPtr!long x = null;
assert(x .useCount == 0);
assert(x .weakCount == 0);
x = SharedPtr!long .make(123);
assert(x .useCount == 1);
assert(x .weakCount == 0);
auto w = x .weak();
assert(x .useCount == 1);
assert(x .weakCount == 1);