請問紅色和綠色,哪個效能方面好點?
void createProduct(Product product){ List<string> list = product.getProductList();
foreach(var item in list){//} foreach(var item in product.getProductList()){//}
}
void createProduct(Product product){ List<string> list = product.getProductList();
foreach(var item in list){//} foreach(var item in product.getProductList()){//}
}
我一般写
foreach(var item in product.getProductList()){//}