result variable names 所有结果当做一个对象存储
Use the event handler's index to select the appropriate slot in the list of the result variable.
使用事件处理程序的索引来在结果变量列表中选择恰当的Slot。
If the global scope requires the result of the event handler, set the result in the global result variable.
如果全局范围要求使用事件处理程序的结果,请在全局结果变量中设置该结果。
If an exception is thrown during the second try statement, notice that the result variable gets set to false.
如果在第二个try语句运行期间抛出异常,那么请注意,result变量被设置为false。
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