All the main languages have been studied prescriptively, especially in the 18th century approach to the writing of grammars and dictionaries.
所有主要语言都经过了规定性的研究,特别是在18世纪语法和词典的写作方法中。
That's especially true, I believe, when it comes to writing programmes.
我相信,在编写程序时,这一点尤其正确。
I do well in my subjects because of all the books I've read, and I'm especially good at writing.
因为读过很多书,所以我各科成绩很好,而且我尤其擅长写作。
But when you start writing programs, especially when we get to web-based stuff where you want -- to check the user's input -- is it valid, is it an email address, -- and all these different scenarios -- it's actually often useful to be able to just enumerate them or rattle them off using this switching construct instead.
但是当你看是写程序时,特别是当我们,使用基于网络的东西,你想要,检查用户的输入-,它是合法的吗?它是不是一个电子邮箱地址?,所有的这些场景-,实际上它常常是有用的,当你用枚举结构列举它们,或者用它来快速地来说出它们。
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