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Function std::char::from_digit

pub const fn from_digit(num: u32, radix: u32) -> Option<char>

Converts a digit in the given radix to a char. Use char::from_digit 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/fn.from_digit.html