A program needs only to be fast enough, not necessarily as fast as possible. —— David R. Hanson
Using macros to avoid function calls is rarely necessary. It pays only when objective measurements demonstrate that the costs of the calls in question overwhelm the running times of the rest of the code. I/O is one of the few places where macros are justified; —— David R. Hanson
I’m aware that many students don’t see the importance of a mathematical approach to CS. The feeling is, just let me near a keyboard and let me code. It’s quite common. —— Jeffrey Ullman
In testing primality of very large numbers chosen at random, the chance of stumbling upon a value that fools the Fermat test is less than the chance that cosmic radiation will cause the computer to make an error in carrying out a “correct” algorithm.
英雄无岁，江湖无辈。 —— 旧江湖中的一句话
我想让事情是它本来该有的那个样子。 —— 死啦死啦
I always worked with programming languages because it seemed to me that until you could understand those, you really couldn’t understand computers. Understand them doesn’t really mean only being able to use them. A lot of people can use them without understanding them. —— Christopher Strachey
In mathematics, it is essential to learn the definition of each term. An intuitive feeling will not suffice.