| 1. | So , for instance , if you were to build the above expression parser into a general - purpose calculator , just writing the parser would leave you with a program that very carefully parsed expressions , then did nothing at all with them
因而，例如，如果您要将上面的表达式解析器编译为一个通用的计算器，那么只需编写解析器您就可以得到一个对表达式进行非常仔细的解析的程序，然后就再也不需要和它们打交道了。 |
