Function call with number parameter becomes a string parameter inside the function

[Carsten Fuchs <CarstenFuchs@...>]

Hello all,

I'm calling a Lua function from C++ code as described in the PiL1/2 book 
chapter 25.2, see http://www.lua.org/pil/25.2.html .

The parameters for the function are pushed onto the stack as numbers, 
using lua_pushinteger() and/or lua_pushnumber().

However, the called Lua function

function f(Key)
    print("'Key' is of type " .. type(Key) .. "\n");
end

outputs:   'Key' is of type string


Strangely, the value of Key is the correct string representation of the 
number that I pushed onto the stack in the C++ code earlier, e.g. if I 
called   lua_pushinteger(L, 48);   then in the Lua function f above, 
Key=="48".

That is, in f I expected that Key==48, but find that Key=="48".
(And therefore my equality tests like Key==48 always fail.)


--> I'm unable to get a clue on what's going on. Am I missing something? 
Any suggestions/hints/help/etc. are mostly appreciated!

Thank you very much!

Best,
Carsten



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Carsten Fuchs    http://www.Ca3D-Engine.de/c_Carsten.php