uncleflo
Registered since September 28th, 2017
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Unicode Character Classes in ECMAScript Regular Expressions
Saved by uncleflo on January 20th, 2015.
ECMAScript, the standardized version of the language JavaScript, defines string values as sequences of UTF-16 code units, not as sequences of characters. This language misfeature complicates Unicode handling considerably. For characters in the Basic Multilingual Plane (BMP) a single UTF-16 code unit (one 16-bit word) suffices. For characters outside this range, two code units are necessary. As an example, the Latin letter A is both one character and one code unit: "A".length === 1, but the Unicode character U+1D400 MATHEMATICAL BOLD CAPITAL A is one character but two code units: "퐀".length === 2. A better language would hide this ugly implementation detail from users, and string attributes such as length would be in terms of characters, not code units. Unfortunately, for historical reasons, ECMAScript forces programmers who want proper Unicode support to deal with raw UTF-16 directly.
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Regex Tutorial - Unicode Characters and Properties
Saved by uncleflo on January 20th, 2015.
Unicode is a character set that aims to define all characters and glyphs from all human languages, living and dead. With more and more software being required to support multiple languages, or even just any language, Unicode has been strongly gaining popularity in recent years. Using different character sets for different languages is simply too cumbersome for programmers and users.
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JavaScript Regex :: XRegExp
Saved by uncleflo on January 20th, 2015.
XRegExp is an open source (MIT License) JavaScript library that provides augmented and extensible regular expressions. You get new syntax, flags, and methods beyond what browsers support natively. XRegExp is also a regex utility belt with tools to make your client-side grepping simpler and more powerful, while freeing you from worrying about pesky cross-browser inconsistencies and the dubious lastIndex property.
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