第10月第6天 lua 闭包

1.

static int mytest(lua_State *L) {

  //获取上值

  int upv = (int)lua_tonumber(L, lua_upvalueindex());

  printf("%d\n", upv);

  upv += ;

  lua_pushinteger(L, upv);

  lua_replace(L, lua_upvalueindex());

  //获取一般参数

  printf("%d\n", (int)lua_tonumber(L,));

  return ;

}

int main(void) {

  lua_State *L = luaL_newstate();

  luaL_openlibs(L);

  //设置Cclosure函数的上值

  lua_pushinteger(L,);

  lua_pushinteger(L,);

  lua_pushcclosure(L,mytest,);
 lua_setglobal(L,"upvalue_test");

http://www.cnblogs.com/biyeqingfeng/p/4990101.html