Re: Making variables = nil indirectly
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- Subject: Re: Making variables = nil indirectly
- From: Tomas <tomas@...>
- Date: 2002年3月12日 09:35:20 -0300 (BRT)
> 1) Is it possible to call a function in lua and pass in a reference to
> an object and set that object to nil like above?
No. You'll have to give its name too so the function could
assign nil to the variable with that name. Not a good solution...
> 2) Is it possible to make MyObject = nil from C, I have tried setting
> MyObject to nill using pushnil etc and removing all references in tables
> to this object but it still remains in lua..
You could search for all variables that store references
to that table and change them, but this is a very cost solution.
Another way is to save a name within the object (instead
of "MyObject = {}" you should create a new object with
"NewObject('MyObject')") so that the destructor could assign "nil"
to that name. However this does not "destruct" another reference
to the same object:
NewObject('MyObject') -- variable MyObject is created!
-- do something with variable MyObject
otherObject = MyObject
MyObject:Destroy()
-- MyObject == nil, but otherObject still refers to the object!
Tomas