Replace core language HexStrings with library entity

[weaselcat via Digitalmars-d]

On Sunday, 22 March 2015 at 10:36:27 UTC, Dicebot wrote:

> It was a response to question "why vibe.d has reimplemented so 
> many bits of Phobos without ever contributing it back".

I apologize if it came off this way, I meant it as "vibe 
shouldn't have to be reimplementing these things, they're already 
in the stdlib so there's an obvious issue here"