1. Why I got "operation may be undefined" in Statement Expression in C++?
为什么我的“操作可能是不确定的”语句表达的C + +?

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2. The behavior of this operation is undefined if the specified collection is modified while the operation is in progress.
如果在操作过程中,指定的集合已被修改,则此操作的行为是未定义的。

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3. Otherwise, the operation is erroneous and its outcome is undefined.
否则的话,这一操作是错误并且它的结果是未定义的。

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4. When you load content from a URL, the default value is undefined until the load operation has started.
从URL加载内容时,直到开始加载操作,才会定义默认值。

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5. When you load content from a URL, the default value is undefined until the load operation has started.
从URL加载内容时,直到开始加载操作,才会定义默认值。

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