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lua-technical-indicators

in c/c++ example

std::vector<double> price = { 1,2,3,4,5,6,7,8,9,10 };

/* initialize Lua */
lua_State*	L = lua_open();
/* load Lua base libraries */
luaL_openlibs(L);
/* load the script */
luaL_dofile(L, "roc.lua");

/* push functions and arguments */
lua_getglobal(L, "ROC");  /* function to be called */
						  
//push 1st argument source-type table-vector-array
lua_newtable(L);              
for (int i = 0; i<price.size(); i++) {
	lua_pushnumber(L, i + 1);   
	lua_pushnumber(L, price[i]); 
	lua_settable(L, -3);         
}

/* push 2nd argument */
lua_pushnumber(L, 9);   
if (lua_pcall(L, 2, 1, 0) != 0) {std::cout << lua_tostring(L, -1);}
if (lua_isnil(L, -1)) {
	std::cout << "nil returned!";
}

std::vector<double> result;

lua_pushnil(L);
while (lua_next(L, -2)) {
	result.push_back((int)lua_tonumber(L, -1));
	lua_pop(L, 1);
}

lua_close(L);

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