The extensive use of pointers in languages such as C greatly affects the accuracy of data flow analysis which further affects the result of program optimization and program transformation .

C语言程序中 指针的广泛 使用严重地影响了数据流分析的精确程度，从而严重地影响了程序优化和程序变换的效果。

Through the restriction of synchronous modification and the use of document pointers and database events the consistency of data in Notes database is ensured .

本文提出了同步修改的方案，并 使用了文档 链 指针和数据库事件的定义，充分保证了Notes数据库中数据的一致性。

The Sun JDKs use an optimized variant of an algorithm called card marking to identify modifications to pointers held in fields of old-generation objects .

SunJDK 使用一种称为卡片标记（cardmarking）算法的改进算法以标识对老一代对象的字段中包含的 指针的修改。