依赖项方法将方法参数定义成接口。
The dependency methods define the method parameters as interfaces.
为此,可以将方法参数定义为接口。
You can do this by defining the method parameters as interfaces.
将方法提升到接口,如清单3所示。
The first way is just to turn the crank on the math, and the second way is to do a little bit more imaginative about the process.
第一个方法就是纯数学推导,第二个方法我们将对,这个过程做一些物理图像的想象。
And so you'll learn over time both by seeing and by doing that there are generally some good ways, some okay ways, and some bad ways of actually writing code.
久而久之,你们将通过看和实践来学习到,这里通常有很好的方法,还行的方法,很烂的方法来编写代码。
OK, and you can see that this thing ought to unwrap, it's going to keep extending out those multiplications until gets down to the base case, going to collapse them all together.
好,你可以看到这种方法,是怎么解决的,他一层层的将乘法展开一直到最底层,然后将他们一起乘起来。
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