最广为人知的限制循环迭代次数的模式称作“达夫设备”。

The most well known approach to limiting loop iterations is a pattern called Duff's Device.

youdao

改善循环性能的最好办法是减少每次迭代中的运算量，并减少循环迭代次数。

The best ways to improve loop performance are to decrease the amount of work done per iteration and decrease the number of loop iterations.

youdao

如果循环迭代次数少于1 ' 000次，你可能只看到它与普通循环相比只有微不足道的性能提升。

In cases where the loop iterations are less than 1,000, you're likely to see only an insignificant amount of performance improvement over using a regular loop construct.

youdao

So unlike Scratch where you pretty much had to say "repeat" ten times or whatever, or forever where it's just "forever" with for loops, -- can you actually specify a finite number of iterations -- and as I learned 15 years ago, finite is important.

所以不像Scratch，你大致上需要用,“repeat“10次或更多，或者需要不断地使用当它,是死循环时，你们能够指定出一个有限的迭代次数-,像我15年前学的，有穷的是重要的。

哈佛公开课 - 计算机科学课程节选