Unicode strings: Difference between revisions
→{{header|Raku}}: update about Unicode version support and string normalization
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(formerly Perl 6)
Raku programs and strings are all in Unicode and operate at a grapheme abstraction level, which is agnostic to underlying encodings
<syntaxhighlight lang="raku" line>sub prefix:<∛> (\𝐕) { 𝐕 ** ⅓ }
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Non-Unicode strings are represented as Buf types rather than Str types, and Unicode operations may not be applied to Buf types without some kind of explicit conversion. Only ASCIIish operations are allowed on buffers.
As the latest version (2022.12) of Rakudo (Raku compiler) available, the official [https://docs.raku.org/language/unicode Raku documentation about Unicode supports] says:
<blockquote>
Raku has a high level of support of Unicode, with the latest version supporting Unicode 12.1.
</blockquote>
So Unicode 13.0, 14.0 and 15.0 are not yet supported (or the documentation is outdated).
However, Raku still supports the following Unicode features
* Supports the normalized forms NFC, NFD, NFKC, and NFKD, and character equivalence as specified in [http://unicode.org/reports/tr15/ Unicode technical report #15].
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* Works seamlessly with upper plane and private use plane character codepoints.
* Provides tools to deal with strings that contain invalid Unicode characters.
In general, it tries to make dealing with Unicode "just work".
Raku intends to support Unicode
A very important distinctive characteristic of Raku to keep in mind is that it applies normalization (Unicode NFC form (Normalization Form Canonical)) autoamtically by default to all strings as showcased and explained on the [[String comparison#Unicode_normalization_by_default|String comparison page]].
=={{header|REXX}}==
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