CODEWITHSUNDEEP
c#.net
Leonard
Leonard

Reputation: 3092

Using subscript character in C# code?

Considering that the C# compiler should be able to handle Unicode characters, I'm curious to know why the subscript character doesn't seem to work? It'd be nice to use it in conjunction with Linq, I think (pseudo-code):

collection.Sort((x₀, x₁) => x₁.CompareTo(x₀));

Upvotes: 1

Views: 401

Answers (1)

CodeCaster
CodeCaster

Reputation: 151674

Because subscript characters aren't in the allowed character classes, basically.

See C# language specification, 2.4.2 Identifiers for the rules. Digits in an identifier must be of the Unicode class "Nd", or "Number, decimal digit".

See Unicode Character 'SUBSCRIPT ONE' (U+2081) for the information on this particular character:

Category                    Number, Other [No]

Character.isDigit()         No
Character.isLetter()        No
Character.isLetterOrDigit() No

This also means that however you compare it, a subscript 1 != the digit 1.

Upvotes: 6

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