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-----not sure if this will end up a double post, the first one did not post after 4 hours-----
The level of experience is very high on this list. I am just wondering how welcome newbie questions are? When I was into Python, python-tutor was a really helpful list. Just 2 or 3 guys made a really big difference answering newbie questions-Patrick 

Jerome Vuarand wrote:

2009/11/24 cynthia powers <powcyn@gmail.com>:

On Mon, Nov 16, 2009 at 6:15 PM, Mark Feldman
<mfeldman@infinite-interactive.com> wrote:

Works for me, the problem must be elsewhere.

=== start code ===
function my_function()
  print("foo")
end

function function_1(my_function)
  my_function()
end

function_1(my_function)        --> foo
=== end code ===

Mark Feldman

cynthia powers wrote:

Hi.
still a Lua newbie..
How do you specify function pointers in lua, and more importantly call
them?
This case does not seem to work for me:
 A.lua:
 function_1 (..., my_function, ..)
..
while (<a function defined in c-world) do
   my_function()
end
..
end
 function_1 (.., my_function,..)
  thanks
cynthia

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Hi Mark,
Thanks. But it still does not work for me. I have a c-calling lua-calling c 
setup. luaL_loadstring returns 3 and luaL_dostring return 1;


You should have read the manual. This would have told you that if
luaL_loadstring or luaL_dostring return a non-null integer, there is a
message describing the problem on the stack. You can access that
message with lua_tostring(L, -1). The message describes the actual
problem. If you're going to ask for further help, at least quote that
message in your email, along with the real script.