为什么用"U +"来指定Unicode代码点? [英] Why is 'U+' used to designate a Unicode code point?

问题描述

为什么Unicode代码点显示为 U+ <codepoint>?

例如，U+2202代表字符∂.

为什么不U-(连字符或连字符)或其他内容?

解决方案

字符"U +"是MULTISET UNION⊎" U + 228E字符(其中带有加号的U型联合符号)的ASCII化版本)，这是为了将Unicode象征为字符集的并集.请参见 Unicode邮件列表中的肯尼斯·惠斯勒(Kenneth Whistler)的解释./p>

Why do Unicode code points appear as U+<codepoint>?

For example, U+2202 represents the character ∂.

Why not U- (dash or hyphen character) or anything else?

解决方案

The characters "U+" are an ASCIIfied version of the MULTISET UNION "⊎" U+228E character (the U-like union symbol with a plus sign inside it), which was meant to symbolize Unicode as the union of character sets. See Kenneth Whistler’s explanation in the Unicode mailing list.

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