我正在对初级(也许是高级)软件工程师所犯的常见错误和错误假设进行一些研究。

你坚持时间最长、最终被纠正的假设是什么?

例如,我误解了整数的大小不是标准的,而是取决于语言和目标。说起来有点尴尬,但事实就是这样。

坦率地说;你有什么坚定的信念?你大概坚持了多长时间?它可以是关于一种算法、一种语言、一个编程概念、测试,或者任何关于编程、编程语言或计算机科学的东西。


当前回答

用汇编语言进行优化=重写。

When I first really understood assembly (coming from BASIC) it seemed that the only way to make code run faster was to rewrite it in assembly. Took quite a few years to realize that compilers can be very good at optimization and especially with CPUs with branch prediction etc they can probably do a better job than a human can do in a reasonable amount of time. Also that spending time on optimizing the algorithm is likely to give you a better win than spending time converting from a high to a low level language. Also that premature optimization is the root of all evil...

其他回答

那当断点有效时,谁还需要JUnit测试?(在调试模式下测试应用程序时)。后来我意识到为什么....

让非程序员明白我在说什么。

用汇编语言进行优化=重写。

When I first really understood assembly (coming from BASIC) it seemed that the only way to make code run faster was to rewrite it in assembly. Took quite a few years to realize that compilers can be very good at optimization and especially with CPUs with branch prediction etc they can probably do a better job than a human can do in a reasonable amount of time. Also that spending time on optimizing the algorithm is likely to give you a better win than spending time converting from a high to a low level language. Also that premature optimization is the root of all evil...

学习一门全新的语言真的很难。

上大学的时候(90年代中期),他们的计算机实验室只有Windows 3.11的机器(我知道,很奇怪的大学)。

有一段时间,我认为作为一个专业程序员,只有Windows平台与我相关,而所有其他平台都只是从历史的学术角度来看有趣。

从学校毕业并学习了现代unix和linux环境后,我不禁对我蹩脚的学校感到愤怒和失望。

我现在还不敢相信,我在计算机工程学位毕业时从未见过bash shell,甚至没有听说过emacs或vim。