First, it improves the efficiency of the lexical analysis during the parsing of the view state string since there is no longer any need to match characters or parse tokens.

第一个目的是改进解析ViewState字符串时进行词法分析的效率，因为此时不再需要匹配字符或解析标记。

youdao

So, after the second line for code here char * s1 gets the return value of get string this is what the state of our world looks like.

在第二行之后,这个代码char，*s1，等于GetSting的返回值,这就是它看起来的状态。

哈佛公开课 - 计算机科学课程节选

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