src/docs/is_digit_ascii_radix.txt

   1 ### What it does
   2 Finds usages of [`char::is_digit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.is_digit) that
   3 can be replaced with [`is_ascii_digit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.is_ascii_digit) or
   4 [`is_ascii_hexdigit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.is_ascii_hexdigit).
   5
   6 ### Why is this bad?
   7 `is_digit(..)` is slower and requires specifying the radix.
   8
   9 ### Example
  10 ```
  11 let c: char = '6';
  12 c.is_digit(10);
  13 c.is_digit(16);
  14 ```
  15 Use instead:
  16 ```
  17 let c: char = '6';
  18 c.is_ascii_digit();
  19 c.is_ascii_hexdigit();
  20 ```