nullable

常见例句

• Nullable types are a special case of generic types.
  可爲Null的類型是泛型類型的特例。
• A SUM function that references a nullable expression.
  引用可爲空表達式的SUM函數。
• Tables A & B both have indexes on the nullable IND_COL column.
  表A和B都在可空列IND_COL上有索引。
• Reset the nullable elements before new data is added to the bean.
  重置空要素新的數據之前添加到豆。
• The Nullable class provides complementary support for the Nullable structure.
  Nullable類爲Nullable結搆提供補充支持。
• Assign a value to a nullable type just as you would for an ordinary value type, for example int?
  爲可以爲null的類型賦值的方法與爲一般值類型賦值的方法相同,如int?
返回 nullable