null pointer value
常见例句
- This marker is usually called the null value, the null list, or the null pointer.
这个标记通常称作空值(null value)、空列表(null list)或者空指针(null pointer)。 - That means a reference type can have a null pointer, but a value type cannot have a null value.
这意味着引用类型可能有空指针,但是数值类型不能有空值。 - This is because the compiler has to preserve the value of the null pointer through all conversions.
使用引用作为函数的参数可能比使用指针更有效率。 返回 null pointer value