要理解现在,我们必须首先理解过去。
函数是一种对应规则,通过它当给定任何东西(作为参数)时,可以获得另一个东西(该参数的函数值)。
I love man as my fellow; but his scepter, real, or usurped, extends not to me, unless the reason of an individual demands my homage.
You can’t be brave if you’ve only had wonderful things happen to you.