It wasn't obvious to me initially why `sort` wasn't working for me (strings
and composite types). On further investigation it looks like that it only
works for single-dimension arrays -- which makes sense. However, if I type:
lst = ["a" "b" "c"]
sort(lst)
I get an error. The answer is that it's of type `Array{ASCIIString, 2}`,
whereas `sort` wants the type to be `Array{ASCIIString, 1}`. The correct
solution is to write this instead:
lst = ["a", "b", "c"]
sort(lst)
The problem seems to derive from two design decisions:
1. It is not obvious to someone new to Julia why one form gives a two
dimensional array whereas the other gives a one dimensional array.
2. `sort` doesn't try to determine if the array passed is actually jeust
one dimensional.
I'm not sure there is a simple solution. I assume there's a good reason for
(1) and (2) involves some overhead which might be undesirable.
