Unicode 小写字符? [英] Unicode lowercase characters?

问题描述

我在某处读到，在 Unicode 中，除了 A-Z 之外，还有一些字符其他具有小写等效项.这些可能是哪一个，为什么其他字符需要大写和小写?

I read up someplace, that there are characters other than A-Z that have a lowercase equivalent, in Unicode. Which could these be, and why would any other character need an upper and lower case?

推荐答案

英语，甚至是那个奇怪的变体，美国英语 :-) ，并不是这个星球上唯一的语言.有一些非常看起来很奇怪的(至少对于那些熟悉拉丁字符的人来说)，但即使是基于拉丁的字符也有细微的变化.

The English language, and even that strange variant, American English :-) , is not the only language on the planet. There are some very strange looking ones (at least to those familiar with the Latin-based characters) but even Latin-based ones have minor variations.

其中两个我不是偶然认识的，是希腊语和德语:

Two of which I am acquainted with on more than a casual basis are Greek and German:

Αα Ββ Γγ Δδ Εε Ζζ  Ηη Θθ Ιι Κκ Λλ Μμ
Νν Ξξ Οο Ππ Ρρ Σσς Ττ Υυ Φφ Χχ Ψψ Ωω

Aa Ää Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn
Oo Öö Pp Qq Rr Ss ß  Tt Uu Üü Vv Ww Xx Yy Zz

这就是我们不允许使用如下代码的原因:

That's why we're not allowed to use bits of code like:

char lower = upper - 'A' + 'a';

还有.在一家认真对待 i18n 的公司中做这样的事情几乎是被解雇的理由.使用支持 Unicode 的 toLower()/toUpper() 类型的函数是更好的方法.

any more. Doing something like that in a company that takes i18n seriously is near grounds for dismissal. Using Unicode-aware toLower()/toUpper()-type functions is the better way to go.

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