Glancing at the bottom, this is pretty arbitrary, but I chose to format my string as follows: % 1f so at the bottom here I'm printing out %.1f, which quick sanity check means print just one digit after the decimal place.

看下这个底部，这个是相当随意的，但我选择把我的字符串格式化成这样：,所以在这个底部我打印输出，提醒一下，这是一个只打印出,小数点后一位的方法。

哈佛公开课 - 计算机科学课程节选

For example, associates ensure quick check-out through the sophisticated use of technology including mobile phone credit card payments.

FORBES: Sephora: Department Stores Cannot Stop Its Global Growth

While it would be a formidable task to check every study Wagenaar et al. subsumed in their meta-analysis, a quick check to find out whether they included a study with a known systematic bias reveals the study included Chesson et al., a study by the Centers for Disease Control which claimed that increased beer taxes could reduce the rate of gonorrhea.

FORBES: Pay More Tax And Cheat Death!

We're pretty stoked to get a chance to check this system out for ourselves but until that time, check out the quick video of it in action below.

ENGADGET