LS And what very often happens if you do an LS in your account, to list your files, there's a whole lot of stuff in here at the moment -- and I don't have it here - but what you'll often see -- I'll just fake this demo -- is a file called core.

经常发生的是，如果你用你的账号做一个，来列出你的文件，此刻这里有一大堆元素,-它不在这里,但你们将经常看到--我将篡改这个演示-,是一个叫做core的文件。

哈佛公开课 - 计算机科学课程节选

- So now if Christiana doesn't actually -- if either programmer or who's programming these little puzzle pieces, don't actually do anything with this return value, and I call, get int, she wants to hand this piece of paper -- to me, but if I don't actually assign -- no, no, I just messed up the demo.

现在如果Christiana没有-,如果程序员或谁在编写这段代码,不要对这个返回值做任何事情，我调用GetInt，她把这张纸给我,但是如果我没有赋值-,不，不，我刚才把这个演示搞乱了。

哈佛公开课 - 计算机科学课程节选

If you follow on below, you'll find a short video walk-through of some of these apps (Sammy didn't demo AllShare or the Hubs for us, sadly), and we've also got fresh hands-on shots to complement the ones we took back in June.

ENGADGET: Samsung Series 5 UltraTouch Ultrabook arrives October 26th, starting at $799

"I looked at that demo and realized we didn't have a demo but a product, " says O'Reilly.

FORBES: Calliope's revenge

When the next iPad rolls out, it wouldn't be wrong to demo it in a kitchen with a Caesarstone countertop and a Wolf range.

WSJ: iPad as Sous Chef