Re: Q on functions as first class values

[Alex Sandro Queiroz e Silva <ventonegro@...>]

Hallo,

Michael Newberry wrote:

> I think I see what is happening (is this correct?):  I have assigned 
> sOldTitle as the value of SetTitle(), so the fact that I did not 
> update sOldTitle by the second call to SetTitle() means that sOldTitle 
> was automatically updated by lua_pushstring() inside SetTitle(). Is 
> this correct? If so, then I could solve the problem by using a dummy 
> value to catch the unused return from the second call to SetTitle(). 
> But I wonder if there is a better way; otherwise that is a "gotcha" 
> waiting to happen again.


    lua_pushstring just pushes a string on the stack, it's the 
assigment that binds that string to a particular variable (sOldTitle in 
this case). The result in the second call was probably discarded. It'd 
help a lot if we could see the code of SetTitle().

-alex
http://www.ventonegro.org/