isDigit method

bool isDigit(
  1. String c,
  2. bool isHex
)

Implementation

bool isDigit(String c, bool isHex) =>
    (c.codeUnitAt(0) >= '0'.codeUnitAt(0) &&
        c.codeUnitAt(0) <= '9'.codeUnitAt(0) &&
        !isHex) |
    ((((c.codeUnitAt(0) >= 'a'.codeUnitAt(0) &&
                c.codeUnitAt(0) <= 'f'.codeUnitAt(0)) |
            (c.codeUnitAt(0) >= '0'.codeUnitAt(0) &&
                c.codeUnitAt(0) <= '9'.codeUnitAt(0)) |
            (c.codeUnitAt(0) >= 'A'.codeUnitAt(0) &&
                c.codeUnitAt(0) <= 'F'.codeUnitAt(0))) &&
        isHex));