Constant std::char::UNICODE_VERSION
pub const UNICODE_VERSION: (u8, u8, u8);The version of Unicode that the Unicode parts of char and str methods are based on. Use char::UNICODE_VERSION instead.
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Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/char/constant.UNICODE_VERSION.html