C++ Container equivalents

[Bruce Adams]

Tomas Lindquist Olsen Wrote:

> Stewart Gordon posted his version of this not too long ago:
> http://pr.stewartsplace.org.uk/d/sutil/
> they seem pretty nice and use phobos.

Quoting from that page: 

"datetime
A set of object-oriented date and time types serving as an alternative to std.date."

Hashmap "Unlike DMD's dodgy associative array implementation, it doesn't rely on an ordering comparator"

What's wrong with std.date and whats dodgey about associative 
arrays?