blocks|key|2946709|text|这样如何：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2946710|#+Using+pack
puts+["2B71F".hex].pack("U")

#+Using+chr
puts+(0x2B71F).chr(Encoding::UTF_8)|code-block|syntax|javascript|2946711|在Ruby+1.9%2B中，你还可以这样做：|2946712|puts+"\u{2B71F}"|2946713|即\u{}转义序列可用于解码Unicode码点。|offset|length|style|CODE|2946714|entityMap^0|0|0|0|0|1|4|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

How about:

<pre><code># Using pack
puts ["2B71F".hex].pack("U")

# Using chr
puts (0x2B71F).chr(Encoding::UTF_8)
</code></pre>

In Ruby 1.9+ you can also do:

<pre><code>puts "\u{2B71F}"
</code></pre>

I.e. the <code>\u{}</code> escape sequence can be used to decode Unicode codepoints.

blocks|key|2946726|text|像U%2B2B71F这样的unicode符号被称为codepoint。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2946727|unicode系统为多种世界语言、科学符号、货币等中的每个字符定义了唯一的codepoint。|2946728|例如，U%2B221E是无穷大。|2946729|codepoints是十六进制数字。每个字符总是恰好定义一个数字。|2946730|有许多方法可以在内存中安排这一点。这被称为encoding，其中常见的是UTF-8和UTF-16。来回转换是很好定义的。|2946731|在这里，您很可能正在寻找将unicode+codepoint转换为UTF-8字符。|2946732|codepoint+=+"U%2B2B71F"|code-block|syntax|javascript|2946733|您需要提取U%2B之后的十六进制部分，并且只获取2B71F。这将是第一次组捕获。See+this。|2946734|codepoint.to_s+=~+/U\%2B([0-9a-fA-F]{4,5}%7C10[0-9a-fA-F]{4})$/|2946735|你的UTF-8字符将是：|2946736|utf_8_character+=+[$1.hex].pack("U")|2946737|参考文献：|2946738|2946739|Convert+Unicode+codepoints+to+UTF-8+characters+with+Module#const_missing.|ordered-list-item|2946740|Tim+Bray+on+the+goodness+of+unicode.|2946741|Joel+Spolsky+-+The+Absolute+Minimum+Every+Software+Developer+Absolutely,+Positively+Must+Know+About+Unicode+and+Character+Sets+(No+Excuses!).|2946742|Dissecting+the+Unicode+regular+expression|2946743|2946744|entityMap|0|LINK|mutability|MUTABLE|url|http://rubular.com/r/fXocVSS7ZS|1|http://snippets.dzone.com/posts/show/4546|2|http://www.tbray.org/ongoing/When/200x/2003/04/06/Unicode|3|http://www.joelonsoftware.com/articles/Unicode.html|4^0|1|7|N|9|0|11|9|0|3|6|0|0|A|0|L|8|10|5|16|6|0|L|9|X|5|0|0|5|2|M|5|12|8|0|0|0|0|0|0|0|0|20|1|0|0|Z|2|0|0|3W|3|0|0|15|4|0|0^^$0|@$1|2|3|4|5|6|7|1U|8|@$9|1V|A|1W|B|C]|$9|1X|A|1Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1Z|8|@$9|20|A|21|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|22|8|@$9|23|A|24|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|25|8|@$9|26|A|27|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|28|8|@$9|29|A|2A|B|C]|$9|2B|A|2C|B|C]|$9|2D|A|2E|B|C]]|D|@]|E|$]]|$1|N|3|O|5|6|7|2F|8|@$9|2G|A|2H|B|C]|$9|2I|A|2J|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|R|7|2K|8|@]|D|@]|E|$S|T]]|$1|U|3|V|5|6|7|2L|8|@$9|2M|A|2N|B|C]|$9|2O|A|2P|B|C]]|D|@$9|2Q|A|2R|1|2S]]|E|$]]|$1|W|3|X|5|R|7|2T|8|@]|D|@]|E|$S|T]]|$1|Y|3|Z|5|6|7|2U|8|@]|D|@]|E|$]]|$1|10|3|11|5|R|7|2V|8|@]|D|@]|E|$S|T]]|$1|12|3|13|5|6|7|2W|8|@]|D|@]|E|$]]|$1|14|3|-4|5|6|7|2X|8|@]|D|@]|E|$]]|$1|15|3|16|5|17|7|2Y|8|@]|D|@$9|2Z|A|30|1|31]]|E|$]]|$1|18|3|19|5|17|7|32|8|@]|D|@$9|33|A|34|1|35]]|E|$]]|$1|1A|3|1B|5|17|7|36|8|@]|D|@$9|37|A|38|1|39]]|E|$]]|$1|1C|3|1D|5|17|7|3A|8|@]|D|@$9|3B|A|3C|1|3D]]|E|$]]|$1|1E|3|-4|5|6|7|3E|8|@]|D|@]|E|$]]|$1|1F|3|-4|5|6|7|3F|8|@]|D|@]|E|$]]]|1G|$1H|$5|1I|1J|1K|E|$1L|1M]]|1N|$5|1I|1J|1K|E|$1L|1O]]|1P|$5|1I|1J|1K|E|$1L|1Q]]|1R|$5|1I|1J|1K|E|$1L|1S]]|1T|$5|1I|1J|1K|E|$1L|1M]]]]

The unicode symbols like <code>U+2B71F</code> are referred to as a <code>codepoint</code>. 

The unicode system defines a unique <code>codepoint</code> for each character in a multitude of world languages, scientific symbols, currencies etc. This character set is steadily growing.

For example, <code>U+221E</code> is infinity.

The <code>codepoints</code> are hexadecimal numbers. There is always exactly one number defined per character. 

There are many ways to arrange this in memory. This is known as an <code>encoding</code> of which the common ones are <code>UTF-8</code> and <code>UTF-16</code>. The conversion to and fro is well defined.

Here you are most probably looking for converting the unicode <code>codepoint</code> to <code>UTF-8</code> characters.

<pre><code>codepoint = "U+2B71F"
</code></pre>

You need to extract the hex part coming after <code>U+</code> and get only <code>2B71F</code>. This will be the first group capture. <a href="http://rubular.com/r/fXocVSS7ZS" rel="noreferrer">See this</a>.

<pre><code>codepoint.to_s =~ /U\+([0-9a-fA-F]{4,5}|10[0-9a-fA-F]{4})$/
</code></pre>

And you're UTF-8 character will be:

<pre><code>utf_8_character = [$1.hex].pack("U")
</code></pre>

References:

<ol>
<li><a href="http://snippets.dzone.com/posts/show/4546" rel="noreferrer">Convert Unicode codepoints to UTF-8 characters with Module#const_missing</a>.</li>
<li><a href="http://www.tbray.org/ongoing/When/200x/2003/04/06/Unicode" rel="noreferrer">Tim Bray on the goodness of unicode</a>.</li>
<li><a href="http://www.joelonsoftware.com/articles/Unicode.html" rel="noreferrer">Joel Spolsky - The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)</a>.</li>
<li><a href="http://rubular.com/r/fXocVSS7ZS" rel="noreferrer">Dissecting the Unicode regular expression</a></li>
</ol>

I have these values from a unicode database but I'm not sure how to translate them into the human readable form. What are these even called?

Here they are:

<ul>
<li><code>U+2B71F</code></li>
<li><code>U+2A52D</code></li>
<li><code>U+2A68F</code></li>
<li><code>U+2A690</code></li>
<li><code>U+2B72F</code></li>
<li><code>U+2B4F7</code></li>
<li><code>U+2B72B</code></li>
</ul>

How can I convert these to there readable symbols?

Convert unicode codepoint to string character in Ruby

数据库

我有来自unicode数据库的这些值，但我不确定如何将它们转换为人类可读的形式。这些到底叫什么呢？下面是它们：U+2B71FU+2A52DU+2A68FU+2A690U+2B72FU+2B4F7U+2B72B如何将这些转换成可读的符号？

问将unicode代码点转换为Ruby中的字符串字符
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问将unicode代码点转换为Ruby中的字符串字符EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问将unicode代码点转换为Ruby中的字符串字符
EN