mozilla/rust — pull request #8287 by sfackler (2013-08-04 18:47:13+00:00)
Title: Added hexadecimal encoding module

FromHex ignores whitespace and parses either upper or lower case hex
digits. ToHex outputs lower case hex digits with no whitespace. Unlike
ToBase64, ToHex doesn't allow you to configure the output format. I
don't feel that it's super useful in this case.