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Replace unicode with Unicode all over the book

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Vse Mozhe Buty 2020-12-07 18:05:47 +02:00
parent e87f130fc1
commit 7c73f64a13
6 changed files with 23 additions and 23 deletions
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9-regular-expressions/03-regexp-unicode/article.md
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@ -4,9 +4,9 @@ JavaScript uses [Unicode encoding](https://en.wikipedia.org/wiki/Unicode) for st
That range is not big enough to encode all possible characters, that's why some rare characters are encoded with 4 bytes, for instance like `𝒳` (mathematical X) or `😄` (a smile), some hieroglyphs and so on.
Here are the unicode values of some characters:
Here are the Unicode values of some characters:
| Character | Unicode | Bytes count in unicode |
| Character | Unicode | Bytes count in Unicode |
|------------|---------|--------|
| a | `0x0061` | 2 |
| ≈ | `0x2248` | 2 |
@ -121,7 +121,7 @@ alert("number: xAF".match(regexp)); // xAF
Let's look for Chinese hieroglyphs.
There's a unicode property `Script` (a writing system), that may have a value: `Cyrillic`, `Greek`, `Arabic`, `Han` (Chinese) and so on, [here's the full list](https://en.wikipedia.org/wiki/Script_(Unicode)).
There's a Unicode property `Script` (a writing system), that may have a value: `Cyrillic`, `Greek`, `Arabic`, `Han` (Chinese) and so on, [here's the full list](https://en.wikipedia.org/wiki/Script_(Unicode)).
To look for characters in a given writing system we should use `pattern:Script=<value>`, e.g. for Cyrillic letters: `pattern:\p{sc=Cyrillic}`, for Chinese hieroglyphs: `pattern:\p{sc=Han}`, and so on:
@ -135,7 +135,7 @@ alert( str.match(regexp) ); // 你,好
### Example: currency
Characters that denote a currency, such as `$`, `€`, `¥`, have unicode property `pattern:\p{Currency_Symbol}`, the short alias: `pattern:\p{Sc}`.
Characters that denote a currency, such as `$`, `€`, `¥`, have Unicode property `pattern:\p{Currency_Symbol}`, the short alias: `pattern:\p{Sc}`.
Let's use it to look for prices in the format "currency, followed by a digit":