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update #9

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2 changes: 1 addition & 1 deletion workspace/lesson28/readme.md
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Expand Up @@ -22,7 +22,7 @@ panic和recover是Go的2个内置函数，用于程序运行期抛出异常(pani

* 如果在函数F里，显式调用了panic或者函数F执行过程中出现运行期错误，那F的执行会终止，接下来会有以下行为依次产生：

* F里被defer的函数会执行。
* F里被defer的函数会执行。(造成Panic的语句前的defer函数)
* F的上一级函数，也就是调用F的函数，假设是函数E。对函数E而言，对F的调用就等同于调用了panic，函数E里被defer的函数被执行
* 如果函数E还有上一级函数，就继续往上，每一级函数里被defer的函数都被执行，直到没有上一级函数。
* 经过了以上步骤，panic的错误就会被抛出来，整个程序结束。
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