Function tlua::ffi::lua_touserdata

source ยท 
pub unsafe extern "C" fn lua_touserdata(
    l: *mut lua_State,
    index: c_int,
) -> *mut c_void
Expand description

If the value at the given acceptable index is a full userdata, returns its block address. If the value is a light userdata, returns its pointer. Otherwise, returns NULL. [-0, +0, -]