How do I get the current value of feature in Jamfile?

我如何获得Jamfile中的特性的当前值？

youdao

The rest of the script is quite straightforward; we get the current value from the field in the document, and then publish it to the property broker.

脚本的其余部分十分简单；我们在文档中获得字段的当前值，然后将它发布给属性代理。

youdao

The system is always aware of the current date and time, so it's a trivial thing for the computer to subtract a birth date from the current date to get an age value.

系统通常只意识到当前的日期和时间，所以让计算机从当前日期中提取出出生日期来获得年龄值是一件微不足道的事。

youdao

Yes, they get to deduct the full current value, but they fall under a different rule, which applies when the charity uses the donated item instead of selling it.

FORBES: Taxing Matters: Going, going, deducted!

Add the two together and you get a 32% premium to the company's current enterprise value.

FORBES: Spinoffs