Returning a flag value would have many of the same problems as the Null Flag bug pattern we discussed last time.

返回一个标志值将引起许多与我们上次讨论的空标志错误模式一样的错误。

youdao

AdArray 0x2000 a flag value combined with another data type constant. Indicates an array of that other data type.

一个标记值，它是与其他的数据类型常数结合在一起使用的。它指明了包含其它数据类型的数组。

youdao

If we had added a getValue method to class Leaf, we would either have to return some sort of flag value indicating that the method application is non-sensical or actually throw an exception.

如果我们已经向 Leaf 类添加了 getValue 方法，我们要么是不得不返回一些类型的标志值表明此方法应用是无意义的，要么是实际抛出一个异常。

youdao

Another sign Goldman was waving a yellow flag at its trading desks: value-at-risk was also down from the second quarter.

FORBES: Goldman's Speed Bumps

Sharing also extends this value in the arena of brand building because sharing helps advertisers flag the conversations they should be tuning in to.

FORBES: How Sharing Will Transform Online Advertising

One might expect this work at least to raise a caution flag, but it has been vociferously attacked on methodological grounds by the same organizations that tout the value of politically congenial research that suffers from more severe methodological shortcomings.

WSJ: Nelson Lund: A Social Experiment Without Science Behind It