Typing ls [a-c]* finds all file names that begin with a, b, or c. Here, the * does not modify the [a-c] as grep's interpreter would; in the shell, * is interpreted as .*.
键入ls [a-c]*以查找以 a、b或c开头的所有文件名。此处的 *在Shell 中不像grep的解释器那样修饰 [a-c],*被解释为 .*。?
The optimizer has been able to do algebraic simplification on a+a, instead generating 2*a, and on (c*b)*12 + c*b, instead generating (c*b)*13.
该编译器可以对a+a进行代数简化,即改为生成2*a,也可以对 (c*b)*12 + c*b 进行代数简化,即改为生成 (c*b)*13。
The optimizer has been able to do algebraic simplification on a+a, instead generating 2*a, and on (c*b)*12 + c*b, instead generating (c*b)*13.
该编译器可以对a+a进行代数简化,即改为生成2*a,也可以对 (c*b)*12 + c*b 进行代数简化,即改为生成 (c*b)*13。
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