Suppose we have a list of strings and want to see whether a certain string is contained in that list.
假定我们拥有一个字符串列表,并且想要知道某个特定的字符串是否包含在那个列表中。
The two assignment statements above, therefore, both create the same list of string values.
因此,上面两个赋值语句创建相同的字符串值列表。
The primary constructor, which is the body of the entire class, has a parameter list that takes a label string and a list of callback functions.
主构造函数,类的主题,有一个参数列表来接受标签字符串和回调函数的列表。
b OK. In this example I'd use b. All right, as b get-- b is the thing that's changing as I go along here, but it could be things like, how many elements are there in a list if the input is a list, could be how many digits are there in a string if the input's a string, it could be the size of the integer as we go along. All right.?
好,在这个例子里我会用,因为b是一直在变的东西,但是也可能是如下情况:,如果输入是数组的话,变化的就是数组的元素数,如果输入是字符串的话,变化的就是字符串的长度,如果是integer的话,可能就是这个数的大小,对不对?
We can put a list in the list again, as we've seen before. So let's put the list containing the string a, and I'll print out so now we see something pretty interesting about a list, that we can mix up all sorts of things in it, and that's OK.
数组放到数组中去,让我们把这个包含,字符串a的数组放进去,然后再显示,我们看到了一些,挺有趣的事情:我们可以把各种,各类的东西混合着放进去,没问题。
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