Replace core language HexStrings with library entity

[Andrei Alexandrescu via Digitalmars-d]

On 3/15/15 12:46 PM, Walter Bright wrote:
> HexStrings:
>
>      http://dlang.org/lex.html#HexString
>
> They're rarely used, but very useful when needed. But, as the octal
> literals have shown, they can be easily replaced with a library template:
>
>      x"00 FBCD 32FD 0A"
>
> becomes:
>
>      hex!"00 FBCD 32FD 0A"
>
> It'll simplify the core language slightly.
>
> Thoughts? Anyone want to write the hex template? Any other ideas on
> things that can removed from the core language and replaced with library
> entities?

hexString and hexBytes. -- Andrei