您也可以使用模板参数 T 来定义一个属性类型，用同样的方式它也可以用作定义该种方式的回转类型。

You can also use the template parameter T for an attribute’s type, in the same way as it was used for the method’s return type.

youdao

他做矿工的时间太久了，以至于他可以凭直觉找到煤矿并用十字镐的一次简单回转把它敲松。

He had been a miner for so long, that he could intuitively locate the coal and loosen it with a single swing of a pick-axe.

youdao

这种模式可以扩展到来回转换的状态标志，但是只有在转换周期不被察觉的情况下才能扩展(从false到true，再转换到false)。

This pattern can be extended to state flags that can change back and forth, but only if it is acceptable for a transition cycle (from false to true to false) to go undetected.

youdao