Replies: 3 comments 5 replies
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The C# compiler is right. The emoji actually consists of two characters. The string To represent this emoji, you need to use the struct |
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Are you asking for the .NET runtime In the meantime, this has the benefit of working today and having possibly even preferable semantics: public string Glyph { get; } = "🧙🏼"; |
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Gee, I suppose either would work. I was thinking of modifying the Yeah, I could use a |
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@tannergooding comes to mind as a person who could help us understand the magnitude of changing
It wouldn't need to be distinguished with a suffix. FormattableString x = $"This is target-typed as FormattableString instead of String."; |
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Emojis are unable to be encoded not only in a single using System;
using System.Globalization;
using System.Linq;
using System.Text;
var s = "👨🏻❤️💋👨🏿";
Console.WriteLine(Encoding.UTF8.GetByteCount(s)); // 35
Console.WriteLine(s.Length); // 15
Console.WriteLine(s.EnumerateRunes().Count()); // 10
Console.WriteLine(new StringInfo(s).LengthInTextElements); // 1FYI, there are also some multi-code-point Chinese characters using System;
using System.Globalization;
using System.Linq;
using System.Text;
var s = "葛󠄀";
Console.WriteLine(Encoding.UTF8.GetByteCount(s)); // 7
Console.WriteLine(s.Length); // 3
Console.WriteLine(s.EnumerateRunes().Count()); // 2
Console.WriteLine(new StringInfo(s).LengthInTextElements); // 1 |
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Character sequence made from any number of emojis joined by ZWJ is also a single emoji. An example is 👨👦👦👦👦👦👦👦👦👦👦 using System;
using System.Globalization;
using System.Linq;
const int AnyNumber = 100;
var parent = "👨";
var child = "👦";
var zwj = '\u200D';
var s = parent + zwj + string.Join(zwj, Enumerable.Range(0, AnyNumber).Select(_ => child));
Console.WriteLine(new StringInfo(s).LengthInTextElements); // 1Windows renders this emoji sequence as a single character.
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see also: emoji-zwj-sequences 🧙🏼 has variations for political correctness. 1F9D9 200D 2640 FE0F ; RGI_Emoji_ZWJ_Sequence ; woman mage # E5.0 [1] (🧙♀️) |
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Putting those details aside, I think the core confusion, especially for new generation developers, is the keyword As old dogs, we know it originated from C, when English character sets were the only ones used, and We are pretty much stuck. If trying to solve it some how, I'd wish a design that the C# language is not coupled to encoding. It would be better to leave those UTF-16/UTF-8 concepts to libraries. Yes, UTF-8 looks like the one true choice today, but so did UTF-16, and so did ASCII. 🤷 |
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Using emoji as character literals doesn't always seem to work:
This gives a compile error: CS1012 Too many characters in character literal.
However there is only one character (the wizard emoji). I guess certain emoji count as multiple characters? It would be nice if character literals could support those emoji.
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