Re: Pushing array to stack from C

[Dave Dodge <dododge@...>]

On Sat, Jul 14, 2007 at 09:54:30PM -0400, Dave Dodge wrote:
> On Sat, Jul 14, 2007 at 06:19:10PM -0700, Chintan Gandhi wrote:
> > How do I push an int array to the stack from C and how do I retrieve it 
> > from within Lua?

Sorry, just noticed the "int array" aspect of this.  Let's assume you
have an array "arr" containing 10 integers in C.  To create a copy of
this array on top of the Lua stack:

  lua_newtable(L);
  for(int i = 0;i < 10;i++)
  {
    lua_pushinteger(L,arr[i]);
    lua_rawseti(L,-2,i + 1);
  }

Note that on the Lua side arrays are normally numbered starting with
1, so I used (i + 1) to renumber your array elements from 0..9 to
1..10.  If for some reason you need the array numbered 0..9 in Lua you
can do that, but be warned that if you use any of Lua's special
operators or functions for handling array-style tables, they're still
going to assume the array starts at 1 and might get confused.

                                                   -Dave Dodge