空指针

• Is a null pointer
  的地址为空指针。
• Warning c6308 : realloc may return null pointer : assigning a null pointer to
  警告c6308 ： “ realloc ”可能返回空指针:将空指针赋给
• An approach to statically determining possible null - pointer exceptions is a technique known as
  静态确定可能出现空指针异常的方法是一种被称为
• Symptoms : a code block that uses null pointers as flags for exceptional conditions is signalling a
  症状：使用空指针作为异常情况的标志的代码块报告
• Who knows how far that null pointer was passed from method to method before it was ever dereferenced
  谁知道空指针在被丢弃前从方法到方法传递了多远？
• 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。
• Is defined simply as a null pointer because the null pointer is invalid as a pointer anyway
  被简单地定义为一个空指针（ 0 ） ，因为无论如何空指针都不是合法的指针。
• This time , i will show how substituting null pointers for exceptional conditions also tends to cause problems
  这一次，我将说明用空指针代替异常情况怎么也会导致问题的出现。
• At depaul university has done some work on automated theorem provers to detect null - pointer exceptions in java
  软件工程系在检测java空指针异常的自动化法则方面做了一些工作。
• Instead , the error signaled at run time would be a null - pointer exception instead of a class - cast exception
  相反，在运行时发出的错误将会是一个空指针异常而不是类强制转换异常。