名词
中文翻译：空读指针
同义词：
['null pointer', 'null reference', 'null value']
例句：
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1.The null-reading cross pointer is used to check if a variable has been assigned a value.
空读指针用于检查变量是否已分配值。
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2. In programming, the null-reading cross pointer is often used to indicate that a variable has not been initialized or assigned a value.
在编程中，空读指针通常用于指示变量尚未初始化或未赋值。
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3. When testing software, the null-reading cross pointer can be used to verify that data is being read correctly from memory.
在软件测试中，空读指针可以用来验证数据是否正确地从内存中读取。