First of all, having read in that value, I can check to see, is it of the right type?

首先，读一下这个值，我们可以来检查看看是不是正确的类型？

麻省理工公开课 - 计算机科学及编程导论课程节选

And so you could construct all subsets, check that the weight is less than the weight of the knapsack, and then choose the subset with the maximum value.

因此你可以构建所有子问题，判断它的重量,是否小于背包的重量，然后选择值最大的子问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

I check the return value of GetInt is greater than zero.

我检查了GetInt的返回值比0大。

哈佛公开课 - 计算机科学课程节选

Check to see if the variable iters left has a value greater than zero.

的值是不是大于,如果是的话，执行下面。

麻省理工公开课 - 计算机科学及编程导论课程节选

The format is the same. I'm going to ask for some input, and then I am going to use that procedure to check, is this the right type of value. And I'm trying to use that to do the coercion if you like. Same thing if it works, I'm going to skip that, if it not, it's going to throw the exception.

格式是一样的，我需要一些输入,然后我要用一个过程来检查,是否是正确的值,然后你就可以做强制转换了,如果能运行，那是一样的，我打算跳过这段，如果不正确，那就会抛出一个异常。

麻省理工公开课 - 计算机科学及编程导论课程节选