提高程序Lisp运行速度的方法[转] test lisp

1、变量名称不超过六位字符；

2、能用+1函数的不用(+ x 1)，同理-1函数；

3、能在循环外运算的移到循环外；

4、能用整数的不用实数；

5、能用cons的不用append;

6、能一次计算出来不计算两次；

7、能通过函数功能过滤得到选择集的不用循环筛选；

8、能使用默认值的用默认值；

9、能通过系统变量改变绘图系统的不用命令改变；

10、能用+的不用*，能用*的不用/；

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原文地址：https://www.cnblogs.com/InspiringMind/p/3750383.html