questions about references and naming
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- Subject: questions about references and naming
- From: rw20@...
- Date: 1999年5月30日 11:38:16 -0400 (EDT)
I'm working on some C++ interfaces to lua and have run into a couple of
questions:
1. When you call lua_ref(true) to lock an object that C knows about but
lua doesn't have any way to reference, does lua_unref unlock the object?
What if lua_ref(true) is called multiple times on the same lua object?
is the object only freed when that many lua_unrefs are called?
2. Can you lua_ref(true) an object with no name:
lua_pushstring("this is a nameless object on the stack");
ref = lua_ref(true);
Where does such an object live? Can you get to it from within lua?
Note: lock has to be true in this case since lua definitely does not have
a reference to the string object (right?).
Thanks,
Russ