Function isAlphabetic [src]
Returns whether the character is alphabetic: A-Z or a-z.
  Prototype
 pub fn isAlphabetic(c: u8) bool  Parameters
c: u8 Source
 pub fn isAlphabetic(c: u8) bool {
    return switch (c) {
        'A'...'Z', 'a'...'z' => true,
        else => false,
    };
}