c++ - Wrapped reference-counting, questions about move-semantics -


i'm working on class acts scope helper reference-counted objects. interface should allow use class follows:

{     handle<string> s = handle<string>::new("hello, world!");     s = s->concat(handle<string>::new(" name peter")); }

while string class contains reference-count.

i not familar move semantics , unable find concrete paper sates conditions apply move-semantics. basically, wondering is:

can this object initialized in move-constructor? because if case, can't tell apart if member in handle class points string contains garbage value or pointing real string.

i guess it's possible using placement construction, doing asking trouble. don't know why mentioned it. short answer: no, cannot. move constructors differ other constructors in type of values accept.


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